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…
Also, see this one (pay wall, Washington Post) about NASA and DARPA working on one to reach Mars much faster to reduce astronautsâ exposure to radiation.
I still think âdurpâ every time I see that acronym đ
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.
If by âWednesdayâ you mean âWednesday in North America. There is no âon Wednesdayâ 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! âď¸
An asteroid is on its way to Earth, but donât worry â 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 Thursdayâs flyby. However, according to a NASA scientist, it will be âone of the closest approaches of a known near-Earth object ever recorded.â
Since the Hayabusa2 returned with the sample from the Ryugu asteroid in December 2020, several important discoveries have been made â 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.
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 âpanspermiaâ proposes that a key mineral (boron) missing on early Earth came in an asteroid from Mars. âď¸ 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.
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.
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.
LHS 475b is 41 light years away, orbiting a red dwarf star in the Octans constellation (one of a few âmodernâ 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 âfew hundred degrees warmer than Earth,â itâs unlikely itâll find much with this exoplanet.
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.
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.
It was âdefinitely luckâ that the dust devil appeared when it did, said the study’s lead author, who estimates there was just a 1-in-200 chance of capturing the audio.
Perseverance has been on Mars for almost two years now, and already recorded wind on Mars for the first time in February 2021.
This dust devil was recorded in late September 2021 (wonder why only now itâs being revealed?). The dust devil was âaverage size,â which is described as about 400 feet / 122 meters tall and 80 feet / 24 meters wide, traveling at 16 feet / 5 meters per second (â 11 mph / 18 mph).
UPDATE. NBC incorrectly reported in the above linked article that the dust devil was recorded by Perseverance. It was actually recorded by InSight, which has just fallen silent after four years of operation. Sigh. I should get science news directly from the source and not from unreliable ânewsâ sites.
There are a lot of dust devils on Mars. A whole lot. Any settlement would have to be extremely prepared to deal with dust all the time, everywhere. If it ever got into equipment that regulated, say, breathable air inside habitatsâŚ
M Thomas Apple Author Page 