May 31, 2023
The post Why Mars Shivers: The Explanation Behind Marsquakes first appeared May 30, 2023 on Science Recent – Your Daily Science Source.The human …
Why Mars Shivers: The Explanation Behind Marsquakes
Something else for future potential Mars settlements to consider….
May 26, 2023
Betelgeuse, the closest red giant to Earth, has long been understood to move between brighter and dimmer in 400-day cycles. But from late 2019 to early 2020, it underwent what astrophysicists called “the great dimming”, as a dust cloud obscured our view of the star.
Now, it is glowing at 150% of its normal brightness, and is cycling between brighter and dimmer at 200-day intervals – twice as fast as usual…It is currently the seventh brightest star in the night sky – up three places from its usual tenth brightest.
https://www.theguardian.com/science/2023/may/26/its-new-territory’s-why-is-betelgeuse-is-glowing-so-brightly-and-behaving-so-strangely?
Betelgeuse is the closet red giant Star to our solar system, one of the shoulders of the Greek constellation of Orion.
The cultural information in the linked article was actually more interesting than the phenomenon observed. For instance, the fact that an Aboriginal people in Australia saw it long before the Greeks did was something I didn’t know.
(Although ancient humans in what is now Germany apparently carved an image of it around 32,000 years ago…)
And that the Greek name comes originally from the Arabic “bat al-jawzāʾ” meaning “giant’s shoulder.”
And all three cultures saw the star as connected with fire held by a giant hunter of some sort.
And so have ancient Babylonians, Egyptians, and probably everyone else, too. We just can’t help personifying even the stars.
The kicker?
When it does eventually explode, it could – over the course of a week – grow so bright that it will be visible during daylight, and cast shadows at night.
Now that’s something I’d like to be around to see. Hmm. If only I could manage to live for another 10- to 100,000 years…
May 22, 2023
Of all the asteroids they modeled, the one with the largest risk of impact was a kilometer-wide asteroid known as 1994 PC1. Over the next thousand years, the probability that 1994 PC1 will cross within the orbit of the Moon is a paltry 0.00151%, hardly worth worrying about.
https://www.yahoo.com/entertainment/cancel-asteroid-insurance-earth-declared-150002866.html
Thanks to Glen Hill over at Engagin’ Science (formerly Scientia, which apparently was far too Latin- and science-esque for search engines to handle) for bringing this (not-so Earth-shattering) info to my attention.
Sorry, folks. Hollywood was once again wrong (sigh).
😂
May 12, 2023
Fireball ‘100 times the size of the solar system’ thought to have been caused by gas being sucked into supermassive black hole
https://www.theguardian.com/science/2023/may/12/astronomers-capture-largest-cosmic-explosion-ever-witnessed
Fortunately, this is about 8 billion light years away.
But it’s been going for over three years now.
Yow.
May 5, 2023
The word has just come in that a fellow traveler has set up his own blog about science.
It’s called Science.
(In Latin, Scientia.)
Glen is a good friend of mine, and not only is he a good scientist, he’s also a good writer. His avowed goal is to raise science literacy and share his love of science with the world.
We may even steal posts from each other from time to time. Or photos (like the one above ⬆️🌏).
Check it out: https://scientiameansscience.blogspot.com
May 3, 2023
Scientists have found a way to decode a stream of words in the brain using MRI scans and artificial intelligence.
https://www.npr.org/sections/health-shots/2023/05/01/1173045261/a-decoder-that-uses-brain-scans-to-know-what-you-mean-mostly
While not perfect, this is some seriously scary stuff.
FWIW the researchers themselves did recognize this…
Although it’s nowhere near being able to decode spontaneous thoughts in the real world, the advance raises concerns that, with improvement, the technology might mimic some type of mind reading. “Our thought when we actually had this working was, ‘Oh my God, this is kind of terrifying,’” Huth recalls.
https://www.science.org/content/article/scientists-use-ai-decipher-words-and-sentences-brain-scans
Participants have to consent to being “read,” and there are ways to prevent the software from figuring out even the “gist” of what they were thinking.
Still, imagine if some nefarious criminal group (or governmental agency, if there is a difference) decided to force someone to consent to have their thoughts read.
Long distance.
Permanently.
It’s getting harder and harder to distinguish scifi from reality.
April 8, 2023
The astronauts will be the first humans to fly in the vicinity of the moon in more than 50 years. They will also be the first to launch aboard NASA’s next-generation megarocket and Orion space capsule. The crew will not land on the moon but will swing around the celestial body, testing the performance of the Orion spacecraft, before returning to Earth.
https://www.nbcnews.com/science/space/nasa-announces-astronauts-will-orbit-moon-year-rcna77896
They won’t land, only orbit. But a first is a first.
Let’s go to Mars, already.
March 30, 2023
Mercury is a planet that just doesn’t make sense. It’s incredibly small yet hosts a relatively massive core. Mercury is so strange that astronomers have not been able to explain its properties with simulations of the solar system’s formation. But now, researchers have found an important clue, and Mercury’s weirdness appears to be the fault of the giant planets.
https://www.space.com/mercury-weird-because-of-jupiter-outer-planets
Basically, Mercury is nearly as dense as the Earth despite being less than 6% the size. This is due to the gas giants in our solar system yanking material (“planetesimals” and protoplanets) and ejecting it from the solar system, leaving Mercury with very little material left to form itself.
But there are plenty of questions still…
February 24, 2023
It is this subsurface ocean, or rather its interaction with the ice shell that covers it, that a team of researchers led by the Catholic University of Louvain (UCLouvain) in Belgium hope to better understand. More specifically, they wish to understand how the ocean’s depth and the pressure exerted by the icy shell on the underground water body influence the formation of tidal motions and currents inside of it.
https://www.space.com/saturn-moon-titan-ocean-tides-icy-crust-study
When I first heard of “Attack on Titan,” I was disappointed to learn that it didn’t take place actually on Titan. (The title in English is a mistranslation. It should be “Attack of the Titans” or “The Titans Attack” or even “Attacking Titans,” depending.) In any case, it’s a disgusting manga/anime with nothing to do with the icy moon of Saturn. Except for the name. And even that’s a misuse (they should have used “giant” as the storyline is very loosely based on Ymir and the frost giants of Scandinavian myth).
Anyway. It’s a fascinating moon the size of the planet Mercury with a liquid ocean and (mostly) nitrogen atmosphere, making it a candidate for extraterrestrial life. Here’s a cool view of it: https://solarsystem.nasa.gov/moons/saturn-moons/titan/overview/
February 4, 2023
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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