Showing posts with label interstellar dust. Show all posts
Showing posts with label interstellar dust. Show all posts

Saturday, April 27, 2019

More incredible space stuff

Today it's the Poway shooting. Each day more evidence that our crisis is not about left-vs.-right, but a mob that's been riled-up against modernity.

And so... we turn to what should be the non-political world of SPACE! Yep, let's focus this weekend on the 99.999999% of everything in the universe that may be within reach of our grandchildren, if only we leave them a positive civilization.


== Cosmology ==

Phil Plait makes the discovery of a relatively nearby and very ancient dwarf galaxy sound like the most exciting thing since Battlestar Galactica got rebooted!

A central black hole (CBH) in a galaxy half a billion light years away has a mass similar to the Milky Way’s CBH, but has recently eaten a star, making it very bright. And a sharp lump near the event horizon appears to be spinning round it at half the speed of light! Another was clocked at 84%!


Reason to believe that clumping dark matter may have led to the formation of many black holes in the earliest universe… and their numbers may be large, today.

News articles miss the point about this newly-chosen, relatively inexpensive NASA mission. Every six months, SPHEREx will survey the entire sky in 96 color bands. That won’t give you a complete, scientific spectrum of any one object. But it will provide a very telling rough spectrum of half a BILLION objects out there. That’s with a “B.” This is not a system to 'learn about universal origins.' It is one dedicated to alerting astronomers: “These 10,000 or so objects are weird. Look at them closer.” Combine this with the Zwicky Transient Facility (ZTF) at Palomar Observatory that seeks fast-changing sky events and the Large Synoptic Survey Telescope in Chile, that will deep survey an enormous area of sky, repeating every few nights, and what we’ll get is something I've long said we need - an incredible alert system to say “Huh! lookadat!.”

And see news about the OCO-3 mission below.

== Exploring our solar system ==

Cool and stunning and gorgeous. A SpaceX launch seen from the International Space Station.

Alan Stern and the New Horizons team have a great year ahead, revealing bits from the doughty space probe’s latest marvelous encounter, nine light hours from the sun. This brief image glances backward as the probe leaves the Ultima Thule realm. New Horizons scientists can confirm that the two sections (or "lobes") of Ultima Thule are not spherical after all. The larger lobe, nicknamed "Ultima," more closely resembles a giant pancake and the smaller lobe, nicknamed "Thule," is shaped like a dented walnut. 

Last year's interstellar visitor 'Oumuamua has a lot of scientists abuzz. The head of the Harvard Astronomy department suggests it was likely an artifact, perhaps a jettisoned light-sail. (Eerily like an event in my novel Existence.) Others now calculate that interstellar space may be relatively filled with rocks. "We find that there should be thousands of `Oumuamua-size interstellar objects identifiable by Centaur-like orbits at high inclinations, assuming a number density of `Oumuamua-size interstellar objects of ~10^15 per cubic parsec." That's a fair amount! Perhaps enough to make travel between the stars an obstacle course. See the sci fi flick PASSENGERS.

And...  JPL’s Young-Earth-Ocean-In-A-Glass, combines water, minerals and the molecules ammonia and pyruvate that are usually found near hydrothermal vents, heated to 158 degrees Fahrenheit (70 degrees Celsius) and decreasing the oxygen content provided them with a laboratory model of the conditions of the "primordial ocean" … “showing that in geological conditions similar to early Earth, and maybe to other planets, we can form amino acids and alpha hydroxy acids from a simple reaction under mild conditions that would have existed on the seafloor…” Kewl time lapse. 

This article on crew behavior during long space missions suggests that onboard software systems appraise word usage and even body language among crew members to track incipient problems. Um, like a crew psychological profile? Will body language appraisal include… lip-reading?

The “Dragonfly” concept for an air-mobile lander on Titan is a major candidate that NASA may choose, this year.

Fascinating evidence that Mars had an extensive ground water circulation system feeding into deep craters for a long time.  


And I'll be examining ever more cool endeavors in June, in DC, as a member of the advisory council of NASA's Innovative and Advanced Concepts program.

And this might be of interest: a deep dive into the ongoing mysteries of quantum physics: A new book released by theoretical physicist Lee Smolin: Einstein's Unfinished Revolution: The Search for What Lies Beyond the Quantum

 == Oh, no! OCO is gonna so find truth ==

There is no scientific program that has been more targeted for hate by the Anti-Science Party than OCO or Orbiting Carbon Observatory.  The Bushites sabotaged or canceled or defunded earlier versions, which finally launched over screaming objections from the Denialist Cult and absolutely verified that human civilization is filling the atmosphere with greenhouse gas that is absolutely warming the planet.

OCO-3 is about to be delivered to the ISS where it will pin down the facts even better, despite desperate Trumpist efforts to slash it. 

Why? Why the hate? Or the commands for NASA and NOAA to cancel Earth observation and even forbid use of the very word "Earth"? Do the plutocrats controlling that party truly seek to preserve coal profits in the very short term over their children's health or possibly survival? Are they so stupid they think their Patagonian ranchos offer them actual security, when the world wakes up, enraged?  (We know where the bolt-holes are. And you will never be able to trust your guards.)

Ask your nutty uncle how he justifies this. Science is the human future. And there's nothing more suicidal than the cultish hatred of smart people.