phys.org

freagle, do astronomy w Astronomy has a major data problem. Simulating realistic images of the sky can help train algorithms

Astronomy is constantly discovering never-befor observed phenomenon. The idea that you can simulate realistic images of anything requires you to have sufficient knowledge of reality, and astronomy keeps showing us that we don’t have that.

The only way I can see this being helpful is to train algorithms for what is already known and can be safely filtered out, making it easier to detect new observations

emuspawn, do astronomy w Astronomy has a major data problem. Simulating realistic images of the sky can help train algorithms
@emuspawn@geostationary.orbiting.observer avatar

What kind of algorithms are those trains running?!

Make sure you check out the simulator webpage for some sweet old school design and a lot of neat pictures! I love a good simulation.

ddash, do astronomy w The Cosmic Owl: Astronomers discover a peculiar galaxy merger
bleistift2, do astronomy w The Cosmic Owl: Astronomers discover a peculiar galaxy merger

[…] only a few hundred of them have been detected in the local universe

Why haven’t they checked other universes?

TropicalDingdong, do astronomy w The Cosmic Owl: Astronomers discover a peculiar galaxy merger
@TropicalDingdong@lemmy.world avatar

bipolar radio jet is stored in the balls

Lyrl, do astronomy w Astronomers confirm the existence of a lone black hole

Neat to see a 6-7 solar mass black hole spotted. First one without a companion star to give it away! As we get better at finding black holes of this size, will be interesting to see if they end up explaining part of the “dark matter” problem.

Grandwolf319, do astronomy w Half of the universe's hydrogen gas, long unaccounted for, has been found

Astronomers have generally thought that massive black holes at the centers of galaxies expel gas in jets of material only during their formative years, when the central black hole is gobbling up gas and stars and producing lots of radiation. This makes them stand out as what astronomers call active galactic nuclei (AGN), or quasars.

If, as the new study suggests, the ionized hydrogen halo around galaxies is more diffuse, but also more extensive, than thought, this implies that the central black holes may actually become active at other times in their lives.

I love how we keep finding more and more about the role that black holes play in our universe.

thefartographer, do astronomy w Half of the universe's hydrogen gas, long unaccounted for, has been found

Was it in the couch cushions? That’s where I often find things.

Scubus,

Surprised jd vance face

5714, do astronomy w Half of the universe's hydrogen gas, long unaccounted for, has been found

Astronomical bookkeeping 🥴

Hydrogen alienation is a crime.

pwnicholson, do astronomy w Half of the universe's hydrogen gas, long unaccounted for, has been found
@pwnicholson@lemmy.world avatar

It’s always in the last place you look.

spankmonkey,
@spankmonkey@lemmy.world avatar

Because you stop looking…

pwnicholson,
@pwnicholson@lemmy.world avatar

Yes, that’s the joke.

Eldritch,

No matter where you go, there you are.

Enkers,

Because I’m in the last place I look?

sepi,

You look like you're in the last place we looked

luckystarr, do astronomy w Half of the universe's hydrogen gas, long unaccounted for, has been found

If I understood this correctly, they analyzed incredibly blurry images and concluded that there are clouds of gas around galaxies, then they extrapolated the found gas up to all or almost all galaxies and concluded that it can fulfill the calculated expectations.

BaroqueInMind,

Thank you. Saved me a click?

OfCourseNot,
@OfCourseNot@fedia.io avatar

What I understood is kind of the opposite–they already knew there were hidrogene clouds around galaxies but analyzed some almost imperceptibly blurry images and found they were bigger than currently thought. They're blurry because they were taken in some wavelength not observable until now that is scattered by the ionized gas.

pruwybn, do astronomy w Astronomers discover doomed pair of spiraling stars on our cosmic doorstep
@pruwybn@discuss.tchncs.de avatar

The explosion is not due for another 23 billion years

Dang, I was hoping I could catch it.

snausagesinablanket, do astronomy w Perseverance rover witnesses one Martian dust devil eating another
@snausagesinablanket@lemmy.world avatar

Played it 3 times. Only saw one.

Zzyzx, do astronomy w AI image recognition detects bubble-like structures in the universe

What does God need with a bubble?

FundMECFSResearch, do astronomy w Asteroid Ryugu samples suggest presence of salty water in outer solar system

Instead of an editorialised version — here is the original paper. www.nature.com/articles/s41550-024-02418-1

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