Showing posts with label universe. Show all posts
Showing posts with label universe. Show all posts

Friday, July 17, 2015

Exploring the Scale of the Universe: Our place in time and space

First, on the very near scale, this miracle year in space just keeps delivering, with amazing results from Mercury, Venus, Earth-climate sensing satellites, Mars, a Mars-grazing comet, landing on another comet, visiting Ceres, and more news from Saturn and Titan! Plus we've announced plans for a Europa mission, deployed a solar sail, arrived at Pluto(!) and confirmed hundreds of additional extrasolar planets. 

It's been the best year for exploratory space missions since 1972... Teach this to your kids and neighbors! It's a civilization that - if flawed - is reason for great pride. On the other hand, let's not get carried away.  We're just getting started and the universe is pretty darn big.  

How big?

== There's a whole lot of space in space! ==

How to envision the immensity of the universe? Almost beyond our comprehension... here is a list of interactive sites that let you zoom or scroll through the vastness of the cosmos, scaling in from galaxies to planets to buildings to atoms and quarks -- or to explore the realm of Time... from the Big Bang through the evolution of life on Earth and the history of humanity. Many of these are wonderful resources for teachers... and for those who want to expand their horizons...

magnifying-universe
Magnifying the Universe
1) Magnifying the Universe: I've always been a big fan of "powers of ten" style zoom-in and zoom-out graphics and films that bring home the incredible ranges of scale that we must deal with, in our puny, brittle minds.  Now see this supercool slide-able graphic that really brings it home. Dizzyingly fun: this interactive version of the universe (from Number Sleuth) takes you in scale from a hydrogen atom to a cell to a human to a star -- then on to our galaxy, local superclusters and beyond. Explore!

scale-universe
2) The Scale of the Universe: This interactive site (from Cary Huang) expands in scale from the extremely small to the incredibly immense -- starting with quantum foam (at the Planck length of 10 -35 m) to neutrinos, quarks, atoms, and cells all the way up to humans, buildings, planets, stars, galaxies and superclusters (on the gigaparsec level). You'll encounter a wide range of lesser known units for measurement: yoctometer, heptameter, attometer, femtometer, picometer...

3) If the Moon Were Only One Pixel: This is fun! A ginormously accurate scale model of our solar system (from Josh Worth) lets you scroll from the sun to Earth... and all the way out to Pluto (if you have the extraordinary patience to go that far). Read the comments along the way (Most of space is just space... and passing through the Asteroid Belt you will never actually see a single asteroid.) This truly lends some perspective on the vastness and emptiness of just our solar system... and perhaps our insignificance in the grand scale of things.

4) The Scale of Our Solar System: This infographic (from Space.com) lets you scroll out from the sun to the outer reaches of the solar system, past the Kuiper Belt to the Oort Cloud, marking off the astronomical units in terms of the distance travelled by light from the sun, from 1 to 14 hours. It also shows the relative distances traveled by the New Horizons, Voyager 1 and Voyager 2 probes.

known-universe-amnh
5) The Known Universe: This gorgeous six minute film (from the American Museum of Natural History) zooms you from the Himalayan mountains, to the orb of planet Earth -- through the outer reaches of our solar system to the spiral of the Milky Way galaxy to distant quasars in the depths of space... then reverses course to plunge back toward home.

Noteworthy.  If you visit and use ALL of these sites, some of these scale notions might sink in better than with just one. Check in and let us know the psychological effects!

6) How Big is Space? This interactive site from the BBC allows you to pilot your rocket ship up through the layers of the atmosphere through the planets, then out to the edge of the solar system, passing the New Horizons and Voyager probes along the way.

interactive-universe
7) The Interactive Universe: this site from the History Channel is less extensive than the others listed here, but it provides information as you click to zoom in on the sun, planets, asteroids, comets, nebulae, then on to the Andromeda Galaxy or black holes.


8) 100,000 Stars: an interactive 3D visualization (created for Google Chrome) of our stellar neighborhood, showing the location and identity of over 100,000 nearby stars. Zoom in to explore.


9) The original Powers of Ten clip: This 1977 film by Charles and Ray Eames begins at a lakeside picnic near Chicago. Starting at a scale of one meter, the film moves outward by a factor of ten every ten seconds, zooming out to Lake Michigan to the globe of the Earth, then on to the solar system, the galaxy, then out the Virgo Cluster of Galaxies... before diving back to our earthbound picnickers and closing in explore inside a single carbon atom. Narrated by the great Phil Morrison, of SETI fame.


10) Solar System Orrery: This lovely interactive animation (by Jeroen Gommers) allows you to envision where the planets in our solar system will be, relative to each other at any given date. It also tracks smaller bodies such as the dwarf planets Pluto, Ceres, and Eris. It's fascinating to let the animation run and watch the planets orbit the sun at different speeds. For a simpler view of their current relative locations, see The Planets Today.


11) Times Infinity offers an updated look at the size comparisons of the universe, starting with the Planck scale and quantum foam, up to neutrinos, quarks and atoms.... and onward to stars, nebulae, galaxies and superclusters, ending with the Great Wall, the largest structure observed in the universe. Accompanied by gorgeous images and music. 


And now on to Time...

Chronozoom
12) Chronozoom: This visual timeline of the universe expands from the Big Bang to the birth of the Milky Way Galaxy to the formation of our planet, then on through Earth's geological eras... to the prehistory of Earth, the evolution of life and the history of humanity. This open source project (designed at Microsoft Research and UC Berkeley, and developed at Moscow State University) also has links to a wealth of teaching resources for the classroom.


Here Is Today website
13) Here is TodayBy progressively clicking, this site (from Luke Twyman) takes you from "Here is Today" to the month, year, century, millennium, epoch, compressing the timeline to reach the geologic period, era, then eon of Earth’s history ... and then expands to show the lifespan of the universe.


Evolution: What's Next?
14) Evolution: What’s Next? This site (from John Kyrk and Uzay Sezen)) offers a slider to move through time: it shows the formation of various elements after the Big Bang, then moves through the accretion of the sun and planets... and on to the formation of the earth's atmosphere and evolution of life.


Human Evolution Timeline
15) Human Evolution Timeline: this interactive (from the Smithsonian Institution) traverses the milestones in the evolution of humans  -- through australopithecus, paranthropus, to homo erectus, charting climate fluctuations along the way.



16) Timeline of Space Exploration: Where have we been and where are we going in space? See this awesome visual chart showing the exploration of our solar system -- showing space probes from Pioneer to Mariner, Cassini to Galileo, and Juno to New Horizons. A work in progress, created by Olaf Frohn. What missions are currently out there, exploring space? See this timeline from Emily Lakdawalla, charting active space missions from 2003 to 2018.



A few more amazing sites well worth your time...
ISS_Size_Comparison_1200x700_RK2011
Historic Spacecraft website
17) Historic Spacecraft: a comprehensive exploration of space history, with photos, drawings, updates and background information (accumulated by Richard Kruse) -- covering space probes, rockets, rovers, launch pads, space suits...plus timelines, size comparisons, cut-away views, history, quotes and more. Truly a wealth of information!

Atomic Rockets website
18) Atomic Rockets: "So You Wanna Build a Rocket?" is an incredibly detailed website devoted to rocket and spaceship design. The site (from Winchell Chung) offers equations, designs, illustrations, even parts lists, behind rocket drives, space stations, spaceships, spacesuits, weapons and so much more. It has entries on Space Law, world building -- and more far-out speculation on aliens and space colonization. A wonderful resource for authors seeking scientific accuracy -- and an aid to getting the science right in science fiction films or stories.

size-comparison-spaceship
Science Fictional Spaceships by Dirk Loechel
19) Size comparison of Science fictional spaceships by Dirk Loechel -- an epic-scale illustration that shows side-by-side images of spacecraft from Star Trek to Star Wars, Dr. Who to Stargate and Starship Troopers. Really fun to explore.

Though... ahem... you guys are missing some (* cough Streaker! *) starship classics that were included in a similar display at Seattle's (alas now defunct) Science Fiction Museum.

20) A 360 degree view of the flight deck of the Discovery space shuttle: A dizzyingly detailed virtual tour of Discovery's deck during its last mission STS-133. Discovery is now at the Smithsonian Air and Space Museum in DC.

21) An Interactive Panoramic Tour of the International Space Station: Explore the modules of the ISS as you navigate through the station. Watch full screen to get the full effect; zoom in to see more detail. Click "Play" to hear ESA astronaut Samantha Cristoforetti demonstrate or explain the operation of various parts of the station. Almost like being there!

Mars Trek website
22) Mars Trek: Fly over the surface of Mars! Explore the planet in 3D with this NASA site: Click and zoom, pan in and out to view the detailed surface geology of the red planet. Almost like being there! You can also access and visualize scientific data sets by overlaying information from probes such as the Mars Rovers - Spirit, Opportunity, Sojourner, and Curiosity.



23) Goldilocks.info visualizes all known exoplanets (nearly 2000) and their host stars. You can explore their similarity to earth -- whether the planets are in the habitable (so-called 'Goldilocks zone') of their host star, along with their surface temperature, mass, atmosphere and other data (designed by Jan Willem Tulp and the ESA).

24) Earth Wind Map shows up-to-date air and ocean currents across the globe -- showing stunning atmospheric circulation patterns. Another site for visualizing wind forecasts is Windyty.  Or see the wind map of the U.S. -- with surface wind data and circulation patterns, updated hourly. See also this collection of beautiful weather maps -- providing essential data on our planet. 

25) Deep Space Network: Our Eyes in the Sky: Which spacecraft are phoning home right now? Check out NASA's Deep Space Network (DSN) -- an international array of radio antennae that communicate with interplanetary space missions. These include antennae in California (Goldstone), Madrid and Canberra. View which antennae  are actively receiving signals, which spacecraft are currently talking to earth.  

26) Satellite Flybys: Do you want to look up and see the Hubble Space Telescope? Enter your location, and this site (from SpaceWeather.com) shows which satellites are currently overhead. It tells when the satellite is over the horizon, the direction to look, and the magnitude. Similarly, Heavens Above charts the visibility of the International Space Station.  

27) Space Engine is a free space simulation program that enables you to explore the universe, pilot a starship -- and land on any planet, moon or asteroid. Or try Explore Mars Now, which allows you to explore a simulated Mars base, and walk through the habitats, laboratories, rovers and greenhouses necessary for a manned mission to Mars.



28) See this: A true scale model of the solar system, created on a dry lake bed in Nevada, covering 7 miles of empty space -- by Wylie Overstreet and Alex Goresh. An attempt to give you perspective on the distances between planets. Here's their video on Vimeo.


29) And finally... XKCD's take on illustrating scale: the observable universe from top to bottom, showing height above earth's surface on a logarithmic scale.



To explore further, see Magnitude: the Scale of the Universe, by Megan Watzke and Kimberly Arcand - which offers a mind-blowing journey across the cosmos, spanning immense scales of distance, time, temperature, mass, speed, density, rotation, and so much more. With vivid illustrations and infographics help visualize... to infinity and beyond!

As well as Powers of Ten: A Flipbook, based on the classic film by Charles and Ray Eames.

Explore...and be amazed!

Sunday, August 17, 2014

More Science: Microbes, Pathogens & Parasites

Time for another science roundup... this time -- biology!

==  Toxins, Viruses and Parasites ==

By some estimates, your body houses ten times more bacteria than cells with your DNA.  But that is only the start of our humiliation! DNA surveys now suggest that humans have thousands of viral species in and on us. Most of them likely coexist within our gut in peace and harmony. This notion - of relatively harmless viruses that therefore have escaped notice by science - has been around a while. It features prominently in my short story “The Giving Plague.

AfterManyThe importance of the micro-biome - the vast array of symbiotic bacteria living in human bodies, especially the gut, was portrayed vividly in a 1930s novel by Aldous Huxley -- After Many a Summer Dies the Swan. But only now are we truly dialing into the importance of what Huxley then called “intestinal flora.” Now read how scientists are at last uncovering hints of huge communities of viruses that lurk below our notice, possibly affecting our health. These gut bacteria may even influence our food choices -- getting us to eat what they want. We have a lot to learn.

Seems that that engineered probiotic bacteria (“friendly” bacteria like those in yogurt) in the gut produce a therapeutic compound that inhibits weight gain, insulin resistance, and other adverse effects of a high-fat diet in mice. “Of course it’s hard to speculate from mouse to human.”   In fact, we are finding ever more longevity-related mouse results that have no bearing on humans! Still…


(BTW Huxley's novel is very good, if perhaps placid-paced by modern tastes. And it turns out on the last page to have been science fiction, all along!  In any event, it should be required reading for singularity-immortality guys and gals.)

Our Microbiome may be looking out for itself. Both Greg Bear and I have been talking about this for a long time… Greg in great detail in transfixing novels. Is your micro-biome affecting your behavior… for its own self-interest? We know that the paramecium Toxoplasma may be altering the personalities of perhaps half a billion people. 

In our guts, bacteria make some of the same chemicals that our neurons use to communicate with one another, such as dopamine and serotonin. And the microbes can deliver these neurological molecules to the dense web of nerve endings that line the gastrointestinal tract. 
A number of recent studies have shown that gut bacteria can use these signals to alter the biochemistry of the brain. Compared with ordinary mice, those raised free of germs behave differently in a number of ways. They are more anxious, for example, and have impaired memory.

Gut bacteria may also play a role in autism: research suggests that restoring microbial balance could alleviate some of the behavioral symptoms of autism.

Funny how we're on a roll about symbiosis between micro-organisms and macro-fauna today. It's all interconnected. As Greg Bear shows in Vitals, Kim Stanley Robinson showed in the Mars series, and I discussed in Earth (especially) and in Brightness Reef.

You can have  your personal microbiota tested at companies such as uBiome. 

== More biology! ==

Virus-Toxin-ParasiteSpeaking of strange interactions between the micro and macro... Toxoplasma gondii (T. gondii) is a single-celled parasite that has infested many modern human societies that keep cats, and as many as 60 million americans. Its subtle effects may include warping personality! (And sometimes physical illness.) Now some researchers claim that TG may be a good model for stimulating the immune system against cancer. Okay. But don’t go rushing to sniff your cat’s litter box. As I said, TG may be doing humanity vast harm by affecting our personalities, exacerbating our rising inability to negotiate and solve problems.  In any event, we see no correlation between TG sufferers and reduced cancer levels. Still, maybe there’s a usable connection. Let's hope this pans out. Go science.

Other researchers have found that a modified version of a toxic bacterium may help shrink cancerous tumors.

More on microbes, pathogens and parasites: Eight diseases to watch out for at the beach.

And while we're on the subject... Creepy slideshow: World's worst parasitic worms.

And in Wired: How Life made the leap from single-celled to multi-celled organisms.

Then there's... Shocking” news about electric eels and other voltage producing fish: "They're using the same genetic tools to build their electric organs in each lineage independently.”

==Planetary Ecosystems==

Tiny Flying Robots Are Being Built To Pollinate Crops Instead Of Real Bees. And sure, there’s a chilling aspect — which the Greenpeace site very cleverly conveys with this creepy satire, reminding us that cautionary criticism is the only way to expose possible errors….

Still, those who deride any and all forms of technological remediation as inherently bad, e.g. that it might reduce the imperative to save real bees, have got something wrong with their perception of human nature. It is possible to move forward in many directions, at once, toward the goal of saving the world -- as it was both consciousness raising and high technology that enabled us to save the whales. 

And yes, while top priority goes to reducing our impact-damage and preserving the natural ways. (I am taking part. Having provided bee swarms with makeshift shelters in the past, up on a nearby hill… I’ve now set up a real hive box… why not?) Still, our worst problem is single-minded monomaniac prescribers, who declare that there is only one, zero-sum, answer to anything. We need to move on all fronts, at once.


amphibians-extinctionYou will spend some time exploring this interesting — and disturbing — graphic: A Disappearing Planet, charting genuses and species bordering on extinction. Amphibians are in real trouble. Heck we all are. Though there's still hope.

Can we stop a killer fungus killing off amphibians?

Do offshore wind farms create fecund artificial reefs? Seals who cluster and forage seem to think so.

Remain agile.  Let's learn to be good planetary managers.


Tuesday, February 04, 2014

The Latest on Time Travel. An ironic title for news about weird S**T

All right, this is going to get a bit dense and weird, as we glimpse discussions of time travel.  But first... a string of wonderfully interesting bits of science news!
== Is each neuron a quantum computer? ==

neuron-computerThe recent discovery of quantum vibrations in microtubules inside brain neurons appears to corroborate claims that consciousness derives from deeper-level, finer-scale activities inside brain neurons. The eminent mathematical physicist Sir Roger Penrose in the 1990s suggested that quantum vibrational computations in microtubules were “orchestrated” (“Orch”) by synaptic inputs and memory stored in microtubules.  They may be the seat of stored information that neurons (and glia exchanges) intermediate.  Moreover, in a new development it is thought that Microtubule quantum vibrations (e.g. in the megahertz frequency range) appear to interfere and produce much slower EEG “beat frequencies.”
In Consciousness in the universe: A review of the 'Orch OR' theory, Penrose and Hameroff suggest, “Consciousness depends on anharmonic vibrations of microtubules inside neurons, similar to certain kinds of Indian music, but unlike Western music, which is harmonic."  

How cool and weird!  Only I am less interested in the mystical implications about roots of consciousness than whether this nails in "intracellular computing" as a major part of brain function. 
Mathematical-Universe-tegmark
If so, then that boosts by many orders of magnitude how many transactions take place to comprise our minds.  And many more Moore's Law doublings will be needed before that number can be replicated, in silicon.
Is that good news or bad news?  Will this delay the arrival of friendly machines who will solve our problems and help us become better, too?  Or will it save us from the imminent arrival of Terminator/Skynet, giving us time to ponder how to do these things right, as physicist Max Tegmark proposes in his article, Humanity in Jeopardy on the Kurzweil site -- as well as his book, Our Mathematical Universe.
the-second-machine-age-cover-259x394Where are we headed? These tradeoffs are discussed by Erik Brynjolfsson and Andrew McAfee in their new book, The Second Machine Age: Work, Progress, and Prosperity in a Time of Brilliant Technologies.

And, of course, well… I explore them pretty extensively, too. See my earlier posting: Could Our Universe Be a Fake?
== Why Glass is so limited? ==
What are the design tradeoffs in delivering actual immersive augmented reality glasses, of the sort I called "tru-vu goggles" in EARTH (1989)? Google Glass finesses the problem with a very narrow angle of view, offset from straight-ahead.  In this article you can see some of the problems… and how a new company has come up with clever ways to solve them.
At Google last week, I described to Head of Research Peter Norvig the reasons why I thought Google was keeping Glass simple, and not covering the user's visual field, or offering face recog features.  He said yep. The company with big pockets cannot afford to be the first to offer full Augmented Reality.  Not when the first ten years will be (as I describe in fiction) filled with accidents and lawsuits.
== What I learned while visiting tomorrow ==
All right then…  David Deutsch, a pioneer of quantum computing and a physicist at Oxford -- as well as the author of The Beginning of Infinity -- came up with a simplified model of time travel to deal with the Grandfather paradox*.  He solved the paradox originally using a slight change to quantum theory, proposing that you could change the past as long as you did so in a self-consistent manner.
clone-information-past“Meaning that, if you kill your grandfather, you do it with only probability one-half,” said PRL co-author Mark Wilde, an LSU assistant professor. “Then, he’s dead with probability one-half, and you are not born with probability one-half, but the opposite is a fair chance. You could have existed with probability one-half to go back and kill your grandfather.”
The original article cited here maintains that, to be consistent with Deutsch’s model, which holds that you can only change the past as long as you can do it in a self-consistent manner, Wilde and colleagues had to come up with a solution that would allow for a looping curve back in time, and copying of quantum data based on a time traveling particle, without disturbing the past.
“That was the major breakthrough, to figure out what could happen at the beginning of this time loop to enable us to effectively read out many copies of the data without disturbing the past,” Wilde said. “It just worked.”
“If an adversary, if a malicious person, were to have access to these time loops, then they could break the security of quantum key distribution,” Wilde said. “That’s one way of interpreting it. But it’s a very strong practical implication because the big push of quantum communication is this secure way of communicating. We believe that this is the strongest form of encryption that is out there because it’s based on physical principles.”Such encryption is believed to be unbreakable — that is, as long as hackers don’t have access to Wilde’s looping closed timelike curves.
=== So?  Are we being visited from the future? ===
EVIDENCE-TIME-TRAVELERSIn a recent paper, Robert J. Nemiroff and Teresa Wilson, suggest that we actually search for time travelers… via Internet searches, by seeking a prescient mention of information not previously available. Their first search covered prescient content placed on the Internet, highlighted by a comprehensive search for specific terms in tweets on Twitter. The second search examined prescient inquiries submitted to a search engine.  Whereupon, lo and behold… "no time travelers were discovered." Although these negative results do not disprove time travel, given the great reach of the Internet, this search is perhaps the most comprehensive to date.
Well, well, didn't the authors kind of assume that the time travelers either want to be found or else that - when back home in the future - they failed to do a web search for traps like the one laid by Nemiroff and Wilson?
OpenLetterAlienLurkersIt reminds me of the "Invitation to Extra-Terrestrial Intelligences" that was issued on the internet by the late professor Allan Tough, who felt certain that mechanical envoy-lurkers -- waiting in the asteroid belt for millions of years -- had already inveigled their way into our networks to read our web pages. (And much more? Are there NSAliens out there?)  Further that they were only awaiting an invitation to speak up and announce themselves.  Allan was brave enough to invite me to post my own variant (deviant?) invitation… or else decryption of why lurkers might refrain and just keep lurking.
All the same logics apply to time travelers, I'm afraid.  Oh, that invitation of mine to lurkers?  It became a number of chapters in Existence!
For an exploration of time travel scenarios in science fiction, see an extensive list of Time Travel in Fiction, or the more recent anthology The Mammoth Book of Time Travel SF, with short stories by Silverberg, Rusch, Levinson, Swanwick, Priest and others.
== And finally ==
Two newly discovered species of spider -- in far-apart Peru and the Philippines -- make decoy spiders to place on their webs, each one about the size of a half-dollar, constructed from debris and food carcasses, with eight legs radiating from its bulky center. The tiny sculptor dwells inside her creation.
Batteries will be vital in the new world of dispersed and sustainable power systems. The prospect of low-cost storage has long been a nirvana for the renewable energy industry with the intermittent nature of wind and solar energy restraining their competitiveness against fossil fuels such as coal.  Now researchers have found ways to use cheap/abundant materials in Flow Batteries.
Coolest commercial mini-drone I've seen so far.

Friday, May 20, 2011

Whose Rapture?

In honor of the coming (or not-coming) Rapture event... may I reprint an article of mine from the last century? It seems even more relevant today. Alas.

A few extreme voices are announcing the impending end of the world. Proclamations of doom are perennial flowers which have sprouted in the garden of human imagination since earliest times. Oracles appeared whenever turmoil caused nations and peoples to feel uncertain about the future. From ancient Sumer, to India, to Iceland, astrological portents used to set off recurring waves of public hysteria.

Ambiguity is the prophet's major stock in trade. King Croesus bribed the Delphic Oracle for good news, so the priests told him what he wanted to hear. If he marched on Persia he would destroy a great empire. He marched, and the empire he destroyed was his own.

Some doom-prophecies proved devastatingly self-fulfilling. When Cortez marched on Tenochtitlan, the Aztecs were paralyzed by similarities between his arrival and the prophesied return of their god, Quetzalcoatl. That paralysis led to the Aztecs' fall. At Troy, Cassandra and Lacöon warned unavailingly against accepting gift horses, showing that all Jeremiads aren't heeded.

We remember each of these foretellings because they came true. Those that fail are seldom noted -- much to the relief of today's tabloid prophets.


Something in human nature seems fascinated by the end of all things. Is it simply an extension of the smaller death each of us faces? Or perhaps a streak of egotism is involved, for out of countless human generations, it would surely mark ours as unique to be the last. Folk myths about humanity's swan song range from the Vikings' awful Ragnarok to universal bliss, and all shades between. Often these myths foresee dividing humankind into an elect, who will experience rapture, and those doomed to eternal punishment for misdeeds in this world.

“Messianism” focuses on an awaited deliverer, who will right wrongs, settle scores, and change the known cosmos more to the liking of those doing the waiting. For example, the Zoroastrians of Persia prophesied a “third savior,” who would purify the land and resurrect the dead. North American plains Indians, inspired by “ghost shirt” magic, believed certain signs augured invincibility to their forlorn cause of driving Europeans from the continent. During the mid nineteenth century, half of China was consumed by the Tai'Ping rebellion, whose charismatic leader claimed to be the younger brother of Jesus.

Larger, more conservative religions also carry notions of divine, overpowering intervention. Buddhism awaits the bodhisattva, Maitreya, to create paradise on Earth. In orthodox Islam a prophesied Mahdi is destined to usher a new age. The celebratory frenzy which accompanied Ayatollah Khomeini's return to Iran may have been amplified by occurring almost exactly 14 centuries after the birth of the Prophet.

Christian millennialists drew inspiration from many sources, such as the promise in the gospels that Jesus would return “...before this generation shall have passed away...” to complete his messianic task. By far the most influential text is the Book of Revelation, which tells in florid, metaphorical detail about the rise and fall of characters such as the “Beast,” and the “Whore of Babylon.” In every generation, tracts have been published which analyzed that mysterious tome, line by line, showing how each obscure phrase and parable connected to events taking place in the author's own region and time. For example, during the approach to year 1800, a zealous flood of printed interpretations correlated the French Revolution and Napoleon's rise to verses of prophecy, proving to the writers' satisfaction that Armageddon was nigh.

Alas for those eagerly expecting Judgment Day, the rumblings heard in the sky were only cannon.

In the run-up to year 1000 of the common era, thousands throughout Europe divested their farms, property, the clothes on their backs, expecting an imminent end. Other episodes occurred at uneven intervals, such as in year 1260, but one could always count on a special surge at each turn of the hundreds column. Popes even proclaimed Roman jubilees, to attract predictable waves of concerned pilgrims whenever round numbers rolled along.

Our own era has seen tabloid oracles, TV evangelists and millennialist politicians, all weighing in to satisfy a seemingly inexhaustible human need for mystic hope mixed liberally with terror. And, in fairness, religion has not been the sole font of apocalyptic scenarios. New-Age spiritualists have joined in, touting everything from Aquarianism and astrology to a fleet of UFOs, due to land just outside San Diego, California. Meanwhile, the past decade saw survivalists stocking private fortresses in eager dread of a coming end to civilization, which, they were certain, would cull the virtuously prepared from the culpably week.

Books such as Hal Lindsey's runaway best seller, The Late, Great, Planet Earth, revealed to millions the “obvious” identity of the Soviet Union as the Devil's final fortress, foretold in scripture. Ronald Reagan's Interior Secretary, James Watt, declared environmentalism moot for the simple reason that the Earth was scheduled to end soon anyway, so why bother saving trees? In retrospect, these pronouncements may seem quaint, with the USSR fading into archeological dust along with Nineveh and Babylon, but one sees no retractions by Lindsey or others. The armageddon merchants simply re-arrange the details of their prophecies in order to keep up with each geo-political turn.

Will Japan or China replace Russia as the next arch-foe of Heaven's host? Will we soon hear political candidates, accusing each other of being the Antichrist?

Nearly all millennialists share an interesting premise, that the entire vast universe was fashioned by a creator with a penchant for brief experiments, foregone conclusions, petty vengeance, and mysterious riddles. During most of human history, this might have seemed a reasonable model of the world, since life appeared so capricious, so instantly and inexplicably revocable. To some extent, that age-old sense of helplessness and enigma remains. Only under a conceited gloss of modernity do we dare step forward and (without meaning any deliberate offense) attempt to pose a question or two.

For instance, even granting the aforementioned godly premise, why would a creator of universes base his doomsday timetable on a human dating system? Might He not use ticks of an atomic clock, marking off radium half-lives until -- phhht? Or, going by certain biblical passages, should we estimate how many sparrows, or shooting stars, have fallen since the Earth began?

For that matter, why count down in decimal? Why not base six, used by the Babylonian inventors of the calendar? Or binary notation? In the code native to computers, this year, 1994 of the common era, translates as 011111001010. It will be a much rounder 10000000000 on the date 2048 a.d., and a symmetrical, mysterious-looking 11111011111 in 2015. On the other hand, if prime numbers are His thing, then both 1997 and 1999 fit the bill in any notation.

Assuming the Omnipotent simply cannot resist round multiples of ten, and conveniently chose Earth's orbital period as the unit of measure, what date shall we figure He is counting from? To Hindus, a three billion year cycle of creation and destruction passes through multiple “Yugas,” of which the present is but one of the more threadbare. The Mayans believe in cycles of 256 years, based on motions of moon and planets. The most recent major shift occurred in 1954.

To certain Christian fundamentalists, the answer is plain. Obviously, the countdown began at the pivot point of the common era calendar, the birth of Jesus of Nazareth.

Unfortunately, that postulate presents problems. Regarding the actual date of nativity, biblical scholars disagree over a range of five years or more. Nor is there good evidence that the month and day assigned to Christmas under the Gregorian Calendar have anything to do with the celebrated event. (Eastern Orthodoxy commemorates Christmas weeks later.) Early church leaders may have meant to match the popular solstice festivals of the Mithraic Cult, followed by their patron, Emperor Constantine, thus making conversion of pagans easier.


And yet, every date of prophecied devastation has passed without event. No matter. Doom-seers are well-practiced at the art of recalculation. In the Nineteenth Century, one mid-western preacher managed to hold onto his flock through six successive failures of the skies to open, until at last he was abandoned by all but the most fervent and forgiving.

Here is just one of the excuses we are bound to hear --

“Of course the countdown shouldn't date from the birth of Jesus. After all, the chief event of his life, the promise of redemption and resurrection, came at the end of his earthly span.”

If so -- assuming the clock has been ticking from Calvary to Armageddon -- we would seem in for a slight reprieve, and yet another wave of millennial fever set to strike some time in the mid 2030s. Again, the lack of any specific written record in Roman or Judean archives will let enthusiasts proclaim dates spread across five or six years, but at least the season won't be vague -- sometime around Easter, or during the Passover holiday.

We've only begun to plumb the options available to millennial prophets. While some sects focus on two thousand Christmases, and others on as many Easters, there will certainly be those who consider such thinking small-scale and altogether too New Testament. After all, why should the Creator terminate His universe on the anniversary of some event which took place midway through its span? Why not start counting from its origin?

Revelations-pagelsRemember Archbishop Ussher of Armagh? He's the fellow who carefully logged every begat in the Bible, then declared that the creation of the world must have occurred at 9 o'clock in the morning, on October 25 of the year 4004 B.C.

Now, there has been a considerable amount of teasing directed at poor Ussher, since he made this sincere calculation back in 1654. His results don't jibe too well with the testimony of rocks, fossils, stars, or the scientists who study such things. Still, he has followers even today, folk who believe that all physical evidence for a vastly older Earth (four and a half billion years) was planted to “test our faith.” (One might ask in reply, if the Lord went to so much effort to convince us the world is billions of years old, who are we to doubt it?)

If Ussher fixated on time's origin, the famed founder of the Protestant Reformation, Martin Luther, had something to say about its end. Luther took into account that “...a day is as a thousand years to the Lord...” (Psalms 90:4), and that genesis itself took six days. He then concluded that the Earth's duration would thus be 6,000 years from first light to the trump of doom. Further, this span would be symmetrically divided into three 2,000 year stretches, from Origin to the time of Abraham, from Abraham to Jesus, and a final two millennia rounding things off at Judgment Day. While this speculation drew little attention back in Luther's day, it is sure to appeal to modern millennialists, hoping for the good luck of witnessing the end in their own time.

Unfortunately, combining Luther's logic with Ussher's date (4004 b.c.) shows that the end should have arrived in 1996! Hell. It hardly leaves any time for me to collect royalties on the paperback edition of this book!

Perhaps we won a little breather on a technicality. Since there was no Year Zero in the common era calendar (One b.c. was followed immediately by One a.d.), the Ussher-Luther deadline shifts to autumn, 1997! Yet that date passed as well.

Fortunately, old Bishop Ussher wasn't the only one counting off from Adam and Eve. The Jews have been at it much longer, and by the Hebrew Calender it is only year number 5753, which seems special to no one but mathematicians.

What of Jewish millennialists, then? Back in the 1640s, followers of Sabbatai Zevi believed passionately that the end had come, but neither that “false messiah,” nor Jacob Frank in the 1720s, brought any New Kingdom, only disappointment. Since then, most Jewish scholars have put less faith in vague riddles of a single manifestation than in a growing maturity of human culture, or a “messianic age”... an attitude which baffles some Christian evangelists no end.

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As with UFO cults, there is no such thing as “disproof” to those who can always find convenient explanations for each failed prophecy. It is useless citing scientific data to refute the supernatural. There are methods for dealing with doomsday cant however. One is to turn things around, and confront millennialists on their own turf. In the end, the entire question revolves around symbols.

In Judeo-Christian mythology, two chief metaphors are used to describe the relationship between the creator and humankind. The first of these depicts a “shepherd-and-his-flock.” The second describes a “father-and-his-children.” These parables are used interchangeably, but they aren't equivalent. Rather, to modern eyes they are polar opposites, as irreconcilable as the tiny, closed cosmos of Ussher and the vast universe of Galileo.

A shepherd protects his flocks, guiding them to green pastures, as the psalms so poignantly portray. All the shepherd expects in return is unquestioning obedience... and everything else the sheep possess. Lucky ones are merely shorn, but that reprieve is brief. None escapes its ultimate fate. None has any right to complain.

Everybody also knows about fathers. Young sons and daughters are expected to obey, when discipline is tight for their own good. Nevertheless, with time, offspring learn to think for themselves. Even in patriarchal societies, a good father takes pride in the accomplishments of his children, even -- especially -- when they exceed his own. If there is a fore-ordained plan, it is for those children to become good mothers and fathers, in turn.

To the perennial, millennial oracles, with their message of looming destruction, here is a head-on response. Ask them this. “Are we children of a Father, or a Shepherd's sheep? You can't have it both ways.

“You preach a tale of violent harvest,” the challenge continues. “Of judgment without debate or appeal, fatal and permanent. A shepherd might so dispose of lambs, but what sane father does thus to his offspring? Would you stand by, if a neighbor down the street commenced such a program on his flesh and blood?

“Anyway, you choose an odd time to proclaim the adventure over, just when we've begun picking up creation's tools, learning, as apprentices do, the methods of a great Designer. Those techniques now lay before us, almost as if someone placed blueprints to the universe to be pored over by eager minds. By those perhaps ready soon to leave childhood and begin adult work.”

The latest crop of millennial prophets might be asked, what do sheep owe the shepherd of a cramped pasture, a cheap, expendable world just 6,000 years old, limited to one ball of dirt, one sentient race?

Personally, I prefer a universe countless billions of parsecs wide, vast and old enough for a hundred million vivid, exciting creations. An evolving, growing cosmos. One worthy of respect.


Time will tell. We, humanity, may yet thrive or fry by dint of our own wisdom or folly. The macrocosm may be, as secularists say, indifferent to our fate.

NewOthernesscoverOr, perhaps some great mind out there does see, does care. If so, that spirit may be more patient than doomsayers credit, with a design far subtler, yet more honest. A truly creative Creator would surely be disappointed in an experiment which ended so trivially, or soon.

(Published in my short story collection, Otherness.