Supernovas, Mars, and solar sails!

We just returned from Pasadena, where Caltech - my alma mater - installed me as Distinguished Alumnus. An honor that I sincerely never expected, given the many brilliant minds I knew when I was there. Reflecting on that is humbling - even 'imposter syndroming' - though people kindly urged me to think otherwise.

In today's delayed posting, I'll be mostly taking a pause from politics... though the topic of my previous blog - about the likelihood of blackmail poisoning top levels of the U.S. republic - remains horrifically plausible... 

...especially now that prominent members of one party are openly admitting that their party is suborned in this way, by foreign powers.

Only now, let's move on to news from out there!

== Space News! ==

I've already posted elsewhere about the incredible "chopstix" landing-grab of a returning heavy-lift SpaceX booster stage. The concept is now proved, even though a whole lot more incremental steps are needed. 

Don't let any polemical jibber-distractions take away from the wonder that was achieved by Gwynne Shotwell and her SpaceX team.

Anyway, as for that distracting blather... well... I recall when there was a similar problem with Frank Zappa -- vast accomplishments that he seemed bent on contiuously spoiling with audience-insulting rants -- until (at last) Zappa listened to the fans shouting he should "Shut up and play your Guitar!" 

The ratio of ravings to accomplishments seems similar, this time. And what will be remembered (whether or not that wise example is followed) is the 'guitar.'**

 == The next steps in space exploration? ==

On this Future in Review (FiRe) podcast, I'm interviewed by the brilliant Berit Anderson - focusing on the near and mid-future of human spaceflight, especially Artemis and other planned missions to the Moon. (Incidentally, the annual FiRe Conference - one of the most visionary gatherings on the planet - has been postponed due to landslides.)

Also.... Just released: a newly-updated version of  Project Solar Sail: 21st Century Edition: A collection of stories and essays exploring the future of lightships and solar sails in propelling interplanetary... and then interstellar... exploration!

This volume (which I edited with Stephen W. Potts) offers classic contributions by Arthur C. Clarke, Isaac Asimov, Larry Niven, Poul Anderson, Jack Vance, and others... plus new material, including by JPL scientists exploring the latest technologies and vast potential for sails in the future of space exploration. 

== A Red/WET Planet? ==

Geophysical/seismic data from the old Mars InSight lander indicates a lot of water – frozen or even liquid – sloshing deep, deep under the surface of Mars. If the water-rich layer now detected deeper below the surface were consistent around the entire globe of Mars, there would be enough water to fill ancient oceans, and then some. 

And while we’re there…

NASA's Innovative & Advanced Concepts program - (NIAC) - is pleased to announce the 2024 NIAC Phase III award to the mighty pioneer of applications of spaceflight to future biology, and vice versa, Lynn Rothschild: “Mycotecture Off Planet: En Route to the Moon and Mars.”  

In other words, growing space habitats with the help of fungi and mushrooms! A house that protects you from vacuum and radiation... and that you can eat!  For a list of all early stage NIAC research, please visit the Funded Studies page. 

The Curiosity Mars rover rolled over a rock, accidentally crushing it open to reveal yellow crystals of elemental sulfur! - the first time sulfur has been found in its elemental form on Mars.

A fine article about my friend & colleague (and half of a mighty fencing team) Geoff Landis, epic scifi author and incidentally superstar NASA scientist, proposing ways to explore Venus. See also Land-Sailing: Venus Rover, where Landis introduces younger readers to methods of exploring - and traveling across - the surface of Venus.

Speaking of Venus…. re-analysis of data from the 1990s Magellan probe appears to show that volcanoes there are still active!

== Gettin’ a little galactic wit it ==

Many of you are familiar with Lagrange points – L1 through L5 – where gravity balance between two objects (the smaller orbiting the larger) creates ‘tidepools’ where even-smaller things can gather. Temporarily or (in the case of Jupiter’s Trojan asteroid clusters) permanently. Here Anton Petrov talks about a (slim) possibility that there might be such a point between our sun and the galactic center.  It would not be able to collect much, with other stars whipping by over millions of years. But still… I do talk about galactic tidepools in Infinity’s Shore!

Mysterious brightening of a distant galaxy: Did this galaxy suddenly brighten, doubling in infrared frequencies, a 10 fold increase in X-rays)… because its central black hole ate a star?

Getting cosmic. Has the James Webb Space Telescope allowed researchers to resolve the “Hubble Tension” or discrepancy in the rate of expansion of the universe?  It may have just been exaggerated… or possible we simply needed a better tool. 

Two huge galactic clusters were colliding at 1% of light speed, billions of years away/ago, heating their gas clouds prodigiously as drag slowed them down… "These cluster collisions are the most energetic phenomena since the Big Bang…"  But while drag slowed the gas and stars, the galaxies’ dark matter apparently kept rolling on ahead at the original velocities, separating dark from regular matter clumps. This is pretty good reporting on how much detailed sleuthing is involved in figuring all this out.

== Truly mind-stretching! ==

Incredible. About 20 seconds into this video by Anton Petrov (one of the best ‘casts about new discoveries in space) you’ll see an amazing image from the Webb Space Telescope. A very deep field photo that dives into the faint past, beyond redshift-3, this one image captures eighty(!) supernovae taking place ‘simultaneously’ (as seen from Earth today) in a single, narrow frame. Each in a different galaxy. 

There are so many things this tells us.

1. Since any one supernova only remains stand-out visible for a few weeks (maybe a bit longer in infrared, the Webb specialty), this means there ‘are’ absolute gobs of them happening out there…

2. …or there used to be gobs of them, since we are in this case peering way back in time, making it a wee bit less surprising, since early star formation must have led to a great many giant, 1st generation stars, of the kind the burn bright and then blow themselves up with core-collapse supernovas… seeding later generations with heavier elements. Certainly, nothing like this rate is occurring “today”… (our redshift <1 era.) Though Betelgeuse is simmering...

3. Since each of the circled supernovae happened in a different galaxy… and it had to be happening a lot, in order for these brief bursts to be so common in one patch of deep sky... it gives you a truly boggling idea how many galaxies there are. A mind stretch that I can only perform for a few seconds at a time. Read more: NASA's Webb opens new window on supernova science..

That we are a civilization capable of building such a wonder as the Webb… and perceiving and marveling at such wonders… fills me with joy! And also fear that we might throw it all away, in a fit of anti-modernity angst, Pushed by powerful fools bent on restoring us to feudalism’s darkness.

More impact news...

Recent chemical and isotopic analyses from samples obtained by coring into the Chicxulub, Mexico's crater site in the Yucatan peninsula, indicate that the 66-million year old mass-extinction event was likely caused by the impact of a carbonaceous asteroid, originating from the outer solar system, rather than a comet.

As for the moon... Bombardment and impact vaporization of meteorites hitting the lunar surface appear to replenish and maintain the moon's extremely thin atmosphere.

Watch this simulation of a black hole tearing apart a star. 

And...You can help find black holes: a new app, Black Hole Finder - enables citizen scientists to help identify singularities in astronomical images collected by BlackGEM telescopes in Chile. 

And yeah. Again. ALL of this is under threat by ingrates with a lunatic grudge against not only scientists, but every fact-using profession. A too-seldom-mentioned aspect of this dire fight for the only civilization that ever brought us all these wonders... and that now stands poised to venture the stars.

If we decide not to blow it.

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** Patrick Farley's Electric Sheep Comix appears to no longer support the beautiful series DON'T LOOK BACK, which featured Guitar spaceships!  You could nag him to repost it?  

Or else enjoy... and be terrified by... APOCAMON, revealing what fate some of our neighbors believe and fervently salivate for, from from the Book of Revelation. OMG read that one and know what they want and plan for us! People who want this are not nice and they are openly telling you what they want for you.