March 15, 2024
This time I figured out how to import the slides directly into mmHmm, and I managed to update my MacOS to Sonoma, which allowed me to use my USB mic (yay). But I also called Ceres a “moon” at some point (it’s not a Moon but a dwarf planet in the asteroid belt near Mars). Oops. Not enough time to edit that bit out or record it again, so just word to the wise! Always fact-check videos, folks. Enjoy!
March 13, 2024
Water molecules have been detected in asteroid samples returned to Earth, but this marks the first time that the molecules have been discovered on the surface of an asteroid in space. The team studied four silicate-rich asteroids using data from the now-retired Stratospheric Observatory for Infrared Astronomy(SOFIA).
https://www.popsci.com/science/water-asteroid-space/
The asteroids in question are Iris (124 miles / 200 km in diameter) and Massalia (84 miles / 135 km). Both are in the asteroid belt between Mars and Jupiter. Iris is about the size of the US state of Maryland, while Massalia is roughly the size of Connecticut.
Note that the same observatory also found water on the Moon, about a “12-ounce bottle” worth. Not nearly enough for a settlement, but where there’s surface water (albeit trapped in soil on the surface), there’s likely to be more underneath.
(See also https://www.swri.org/press-release/swri-scientists-identify-water-molecules-asteroids-the-first-time — the PopSci linked article above essentially plagiarised almost its entire text. Bad scientist, bad.)
Original article here: Arrendono et al. (2024) Detection of molecular H20 on nominally anhydrous asteroids. Planet. Sci. J. 5. 37 doi 10.3847/PSJ/ad18b8 – good luck trying to read it!
February 28, 2024
So, astronomers need to know both mass and diameter to determine whether a planet is truly similar enough to ours to host some form of Earth-like life. If the planet has a low mass and a large radius, it is likely like a so-called mini-Neptune with a gassy atmosphere and little rock. If it has a higher mass but a smaller radius, it’s probably a rocky planet like ours.
The possibility that TOI-715 b is rocky “would be exciting because that supports it being more of a habitable planet versus some sort of other world,” says Moran.
https://www.astronomy.com/science/recently-discovered-super-earth-might-be-habitable/
TOI-715 orbits a red dwarf star around 137 light years away, so we won’t be getting there any time soon. But after finding this planet last year, astronomers also are trying to confirm the existence of another smaller, closer to Earth-sized planet in the habitable zone (i.e., in an orbit that permits liquid water necessary for life to evolve).
And the name of the possibly new “sibling” planet?
“TIC 271971130.02”
Uh. We gotta come up with cooler names, folks.
For starters, they orbit a dwarf star.
February 25, 2024
Astronomers have found three previously unknown moons in our solar system — two additional moons circling Neptune and one around Uranus.
https://www.nbcnews.com/science/space/astronomers-spot-new-tiny-moons-neptune-uranus-rcna140285
One takes nearly 27 years to circle Neptune.
The “new” moon of Uranus is only 8 kilometers (5 miles) in diameter.
And there are likely many more yet to be discovered.
February 23, 2024
A robotic spacecraft made history Thursday becoming the first privately built craft to touch down on the lunar surface, as well as the first American vehicle to accomplish the feat in more than 50 years.
https://www.nbcnews.com/science/space/moon-landing-odysseus-touches-down-lunar-surface-n1308924
Congratulations! 🎉
You now have one week before shutting down permanently.
Jeez. Really? That’s a very expensive week at $118,000,000. Glad the taxpayers approve (?)
February 15, 2024
The moment we’ve all been waiting for is nearly here!
Bringer of Light is finally set to be released on March 15, 2024! (Click the link to see a book synopsis and two brief excerpts; Smashwords also has an excerpt from the beginning chapters.)
Stop by Draft2Digital to see links to your favorite bookstore online!
UPDATE: I have some difficulty convincing D2D to distribute to Amazon. Therefore, I have decided to publish Bringer of Light directly on Amazon. Stop by here to order for Kindle (released March 15th). Paperback and hard cover are also in the works.
February 14, 2024
A study published this weekend in the journal Monthly Notices of the Royal Astronomical Societyproposes that the oldest star in the Milky Way is a faint white dwarf that is about 10.7 billion years old and shining roughly 90 light years away from Earth.
https://www.popsci.com/science/the-milky-ways-oldest-star-is-a-white-hot-pyre-of-dead-planets/?fbclid=IwAR3smMe_OryfOHbM03X9HZIz9CcFu85LCsmGiNe5vaBh-7678xtPO4VOuxY
The Milky Way is old. Like, really, really old. One of the oldest galaxies.
This is probably what will eventually happen to our solar system. That’s right, everything will turn to rubble and get sucked into the dying Sun.
So, given all that, there’s only one thing for it…
February 1, 2024
OK, so my post about a big ole spider got the most likes of any post in ten years of blogging about science.
I have so not got the zeitgeist of the 2024 blogosphere lol – anyway, thanks, all, for the “likes”! Although one person used AI to write a very meaningless comment about arachnophobia. What’s the point, man?
By the way, back to science and space stuff. I forgot to post about the Europa Clipper project back in October.
So here you go. (It’s too late to add a message, but the project obviously is going to take some time arriving there, and you can supposedly hear US Poet Laureate Ada Limón read her poem online, although I’ve had trouble with the audio lately:
“Arching under the night sky inky
with black expansiveness, we point
to the planets we know, we
pin quick wishes on stars. From earth,
we read the sky as if it is an unerring book
of the universe, expert and evident.
Still, there are mysteries below our sky:
the whale song, the songbird singing
its call in the bough of a wind-shaken tree.
We are creatures of constant awe,
curious at beauty, at leaf and blossom,
at grief and pleasure, sun and shadow.
And it is not darkness that unites us,
not the cold distance of space, but
the offering of water, each drop of rain,
each rivulet, each pulse, each vein.
O second moon, we, too, are made
of water, of vast and beckoning seas.
We, too, are made of wonders, of great
and ordinary loves, of small invisible worlds,
of a need to call out through the dark.”
January 31, 2024
The craft is at a very awkward angle. A picture, captured by the small baseball-sized robot called Sora-Q – which was ejected from Slim moments before touchdown – showed the lander face-down on the lunar surface.
That left its solar panels facing away from the sunlight and unable to generate power. The decision was taken to put the lander into sleep mode – and conserve what power remained – less than three hours after it landed.
That tactic appears to have worked. A change in the direction of the sunlight has now “awoken” the craft.
https://www.bbc.com/news/science-environment-68131105
As previously reported, JAXA did achieve its goal of a “precision landing” — as some put it, a “pinpoint” touchdown within 100 meters of the intended target — within 55 meters, although if all had gone as planned, it would have been within 10 meters.
That’s far, far closer than previous Moon landings.
Too bad SLIM is essentially standing on its nose. But at least this is a beginning. Japan has now become the fifth country (US, USSR, China, India) to successfully “soft land” an object on the Moon.
And the robots it brought with it are pretty amazing. And tiny.
January 23, 2024
The so-called Big Ring has a diameter of about 1.3bn light years, making it among the largest structures ever observed. At more than 9bn light years from Earth, it is too faint to see directly, but its diameter on the night sky would be equivalent to 15 full moons.
https://www.theguardian.com/science/2024/jan/11/newly-discovered-cosmic-megastructure-challenges-theories-of-the-universe
This is important because it contradicts the so-called “cosmological principle” that everything in the universe is basically evenly distributed.
Just thinking about it, though, it makes little sense to assume that galaxies are all evenly spaced. Assuming the Big Bang was a single point should not imply even spacing of anything.
FWIW the “Big Ring” is evidently more a corkscrew shape, directly aimed at us. Evidence of “cosmic strings”? Maybe.
This is not as interesting as technology that will allow us to build hotels and colonies at LaGrange points or communities on Mars, but it’s still interesting. Sorta. Maybe?
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