asteroids | M Thomas Apple Author Page

10 things I know to be absolutely certain

July 17, 2023
MThomas

List 10 things you know to be absolutely certain.

1. I know it to be certain that the wording of this prompt is a bit odd. Is this meant to mean “know to be true”?

2. I know it to be absolutely certain that there are many things about which I am far from certain.

3. I also know it to be absolutely certain that at least one of the things I know to be certain will annoy at least one person who reads this.

4. I also also know it to be absolutely certain that at least one of the things to know to be certain will amuse at least one person.

5. One of these things I know to be absolutely certain may even irritate and amuse the same person (👈 maybe even this one right here).

6. I even know it to be absolutely certain that writing a list of ten things that are absolutely certain takes a considerably longer time than I had initially anticipated.

7. Just to be sure I irritate someone, it is absolutely certain that the world is a warmer place than it was when I was a kid 40 years ago.

8. The fact that June 2023 was the hottest month on record is absolutely certain.

9. I know it to be absolutely certain, however, that we have only been keeping records on temperatures worldwide since the late 1880s, and records were measured using different instruments

10. But the most important thing to be absolutely certain that I know is that Sony says they have the technology to make humanoid robots but can’t figure out what to use them for. I have an idea or two about that…

Cancel your asteroid insurance – for the next thousand years

May 22, 2023
MThomas

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).

😂

Just another week on the ISS…

February 26, 2023
MThomas

Until the new Soyuz pulls up, emergency plans call for Rubio to switch to a SpaceX crew capsule that’s docked at the space station. Prokopyev and Petelin remain assigned to their damaged Soyuz in the unlikely need for a fast getaway. Having one less person on board would keep the temperature down to a hopefully manageable level, Russian engineers concluded.
https://www.nbcnews.com/science/space/russia-launches-rescue-ship-space-station-leaks-rcna72161

Russian space agency Roscosmos concluded that the leak in the docked Soyuz capsule was from a micrometeorite impact.

They also reversed the previous decision last year to abandon the ISS. Now Russia will still send cosmonauts through 2028.

A positive step in a brutal political climate. International space projects should include more, not fewer, countries. Space is for everyone.

Shooting star over the English Channel

February 15, 2023
MThomas

Courtesy of @dlxinorbit – via @Marco_Langbroek

The agency earlier said the object was expected to “safely strike” the earth’s atmosphere near to the French city of Rouen.
https://www.bbc.com/news/uk-64621721

“Near to”? OK.

Anyway, “SAR2667” provided some cross-cultural entertainment for people living in England, France, Belgium, and the Netherlands. Lots of photos and videos online.

Interesting note from ESA: they were able to detect it and notify everyone exactly where and when it would disintegrate.

Since there are more than 30,000 of these things that orbit the Sun relatively close to Earth’s orbit, it’s a good thing we’re getting better at detecting them. Maybe we’d better up the ante on deflecting them…

“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.

“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!

DART did it! 🎯

October 12, 2022
MThomas

“For the first time ever, humanity has changed the orbit of a planetary body,” said NASA planetary science division director Lori Glaze.
https://www.sciencenews.org/article/dart-mission-deflected-asteroid-for-planetary-defense

A change of 32 minutes in orbit — but only 4% of the total orbital period. To deflect an asteroid away from Earth, it’d better be done several years in advance. 🌏

Still, it can be done. An amazing first.

Upcoming future events (according to a time traveler)

October 10, 2022
MThomas

Remember, it’s a video on TikTok, so it must be real. (link below to The Independent, a completely trustworthy sources of snarkiness).

https://www.indy100.com/viral/time-traveller-meteor-earth-tiktok-2658417934

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