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Science fiction, actual science, history, and personal ranting about life, the universe, and everything

Bringer of Light, Chapter 38 (Part 2): United Mars Colonies — Cut the Tether (this time for good!)

February 4, 2023
MThomas

Concerned that the UA forces on Luna Base may use the quantum teleporter to send an unwelcome gift to the newly-declared independent United Mars Colonies, former Mars security chief Sergeant Major Hamels and former Artemis crew members Enoch Ryan and Brady Cooper attempted to disable the teleporter ahead of time.

Too late…

Cooper could sense the radioactive isotopes within the canister. The explosive materials could kill them and most of this part of the colony due to sudden decompression of the building’s atmosphere. Fine radioactive dust spread everywhere. If it reacted with the cobalt in the boxes around them, the resulting dirty bomb could poison half or most of the planet for years. Decades, even. Who knows how long it would last.

If anyone were around to care.

“Fly-boy, you sense that?”

“Yeah.”

“Let me try something.”

“You want the rifle?”

“The energy discharge will just set it off. That’s probably what they were counting on. Or hoping we’d try to disable it.”

“Or send it back,” Hamels said. “No doubt their end has a rigged signal to reject contact, which also would set the thing off.”

“Then there’s only one option.”

With a sigh, Enoch set the rifle down next to the console. “Coop, something tells me you need me to help.”

“You read my mind.”

“Not yet.”

Now it was Hamels’ turn to back away. “What are you both doing?”

“Sergeant Major, we need you to focus on maintaining the force shield.”

The geist sat down crosslegged on one side of the platform. Enoch sat down likewise across from him on the opposite site. They stared into the force shield, concentrating on the cylindrical container.

“What are you doing?!” Hamels repeated.

“Changing it to uridium,” Cooper replied.

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Look! Up in the sky! It’s a bird! It’s an airplane! It’s…

February 4, 2023
MThomas

A Japanese telescope positioned on top of Mauna Kea, a dormant volcano on the Big Island of Hawaii, captured video of an eerie flying spiral in the night sky on Jan. 18.

In the video, a small bright spot appears and slowly gets brighter and starts to dissipate into a spiral before getting small again and disappearing.

https://www.yahoo.com/entertainment/japanese-telescope-captures-image-mysterious-180332172.html

In fact, it was the remains of a discarded Falcon 9 booster from the launch of a SpaceX satellite. And it isn’t the first time this has happened. Japanese TV talked about this, too (since it was a Japanese astronomy, at the Subaru Telescope, that first recorded it).

So, an Identified Flying Object!

Yay, more metallic junk.

(Thanks to Glen Hill for bringing this article to my attention.)

“Green comet” buzzing Earth “Wednesday”

February 1, 2023
MThomas

A comet from the outer solar system is set to buzz Earth on Wednesday and skywatchers have a chance to glimpse the celestial object as it journeys through our cosmic neighborhood for the first time in 50,000 years.

https://www.nbcnews.com/science/space/green-comet-approach-flyby-earth-rcna65202

If by “Wednesday” you mean “Wednesday in North America. There is no “on Wednesday” worldwide, thanks.

Observers in the Northern Hemisphere should look northeast just after the Moon sets and before dawn. You should be able to see it with a good pair of binoculars.

The last time Comet C/2022 E3 (ZTF) made a visit, Homo sapiens still had Neanderthal neighbors, so this is your one and only! ☄️

“Don’t worry,” they said, “the size of a truck,” they said…

January 26, 2023
MThomas

An asteroid is on its way to Earth, but don’t worry – the end is here Not here. The asteroid, named 2023 BU, is about the size of a van and is expected to miss our planet during Thursday’s flyby. However, according to a NASA scientist, it will be “one of the closest approaches of a known near-Earth object ever recorded.”

https://newsbeezer.com/germanyeng/a-truck-sized-asteroid-will-come-extraordinarily-close-to-earth-tomorrow/

This thing is coming closer than even some satellites, but it’s still small enough for most of it to burn up in the atmosphere.

Most of it.

Yikes.

Confirmed: We’re all here thanks to asteroids

January 26, 2023
MThomas

Since the Hayabusa2 returned with the sample from the Ryugu asteroid in December 2020, several important discoveries have been made – most notably analyzes confirming the presence of substances thought to be the building blocks of life on the asteroid, such as liquid water and organics fabrics.

https://newsbeezer.com/germanyeng/ryugu-asteroid-helps-unravel-the-origin-of-life-on-earth/

Hayabusa-2 took several years to land on Ryugu (literally “Dragon Palace”), pound out just over 5 grams of asteroid material, and bring it back to Earth (landing in Australia in late 2020).

NASA scientists have confirmed not just frozen water but liquid — inside crystals called pyrrhotites. JAXA scientists (pictured above with Prof Tsuchiyama of Ritsumeikan University, my main employer!) continue to check the density of the samples.

The water is similar to the carbon dioxide-laden water of hot springs. The research teams have already discovered over 20 amino acids, the basic protein building blocks of carbon-based life.

Another theory called “panspermia” proposes that a key mineral (boron) missing on early Earth came in an asteroid from Mars. ☄️ Hmm. Did Mars produce asteroids? Or more like asteroids hit Mars and broke off lots of tiny fragments? That somehow survived the journey to Earth?

Seems a little unlikely. But there is now evidence that at least some proteins came from space rocks.

So, sorry, Ridley. This isn’t how it happened. Cool movie, though.

What is this “Cislunar” space?

January 24, 2023
MThomas

Though definitions sometimes differ, cislunar space generally refers to the space between Earth and the moon, including the moon’s surface and orbit. Any nation or entity that aims to establish a presence on the moon, or has ambitions to explore deeper into the solar system, has a vested interest in operating in cislunar space, either with communication and navigation satellites or outposts that serve as way stations between Earth and the moon.

https://www.nbcnews.com/science/space/space-earth-moon-get-little-crowded-rcna64333

There is actually a limited amount of orbital space available between the Earth and the Moon (note: capitalize it, NBC! grrr..).

So, expect more and more competition for satellites — communication, navigation, and way stations.

And of course military and spy stations.

And by the way, only eight nations signed the so-called “Artemis Accords” in 2020. Guess who didn’t?

Buckle up!

That’s what I want: A tall building with frickin’ laser beams on top!

January 17, 2023
MThomas

The feat, which involved firing powerful laser pulses at thunderclouds over several months last year, paves the way for laser-based lightning protection systems at airports, launchpads and tall buildings.

https://www.theguardian.com/science/2023/jan/16/scientists-steer-lightning-bolts-with-lasers-for-the-first-time

Probably a little cost-prohibitive for most of us, but potentially useful for others!

Webb finds rocky Earth-sized planet

January 13, 2023
MThomas

The finding demonstrates how the observatory could be used to search for potentially habitable planets in the cosmos and examine the chemical makeup of their atmospheres.

https://www.nbcnews.com/science/space/james-webb-telescope-finds-first-exoplanet-rcna65374

LHS 475b is 41 light years away, orbiting a red dwarf star in the Octans constellation (one of a few “modern” constellations only seen in the deep southern hemisphere).

Webb can even detect the presence of atmospheres, though given LHS475b has an orbit of two days and is a “few hundred degrees warmer than Earth,” it’s unlikely it’ll find much with this exoplanet.

Still, it’s a first. The first of many, I hope.

“New” rock “found” in Somalia has two (or three) “new” minerals

January 7, 2023
MThomas

Canadian researchers said the rock was found in rural Somalia two years ago, but locals believe it is much older.

They call the stone Nightfall, and say it is documented in poems, songs and dances that stretch back five generations. It is used today to sharpen knives.

https://www.bbc.com/news/world-africa-63800879

The “new” rock is apparently a meteorite that fell to Earth at least 100 years ago (or more, depending on how you define a “generation”). The two newly-identified minerals are being called “elaliite” (after El Ali, Somalia) and “elkinstantonite” (after NASA planetary evolutionary expert Lindy Elkins-Tanton).

And there’s still one more as-yet-unidentified mineral in the 70-gram rock fragment at the U of Alberta (the original is about 15 tons, and is reported to be the 9th largest such meteorite to have survived entering the Earth’s atmosphere). These three minerals evidently do not exist naturally on Earth. Makes you wonder how many other such minerals are still floating around in space.

And of course, how they might be used to make incredibly strong yet flexible spacecraft materials. (FWIW NASA was already talking about “new” materials such as carbon nanotubes and self-healing piezoelectronic “skins” some twenty years ago…)

Now, maybe it’s just me, but I have a feeling that a 15-ton rock falling into the desert would have raised all sorts of hell. At least locally. Nothing like a 143,000 ton rock, of course. Is there really no record of this thing falling out of the sky? Maybe it’s time to talk to non-European communities and to take their oral legends a bit more seriously.

The 2022 Year of Space Exploration

January 2, 2023
MThomas

Lots and lots and lots of space stories occurred in 2022.

From DART to Landsat, Sagittarius A* black hole to CAPSTONE, the Korean Pathfinder to SpaceX, and to the ISS, Moon, and Mars, here’s a summary of major space exploration projects last year.

Looking forward to 2023 and beyond!

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