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SweetCitrusBuzz, 4 dni temu do astronomy w Scientists look to black holes to know exactly where we are in the Universe. But phones and Wi-Fi are blocking the view

Yeah, we need fewer satellites really.

As for the rest, that’s not easily solved.

pennomi, 5 dni temu do astronomy w Scientists look to black holes to know exactly where we are in the Universe. But phones and Wi-Fi are blocking the view

I still think they should build out a lunar crater radio telescope out there on the dark side of the moon. The radio silence and scale would be impossible to get any other way.

ogmios, 5 dni temu

scale

That’s an interesting thought I hadn’t considered. The Webb is about as quiet as we’re going to get anywhere near our orbit, but a lunar compound could very easily be much larger, and would be a great deal easier to service/upgrade.

pennomi, 5 dni temu

The dark side of the moon is shielded from the planet’s radio by the whole moon. So it’s a pretty attractive place to set up.

Plus, several candidate craters have favorable geometry for a massive radio telescope.

It truly is one of my favorite proposals.

quediuspayu, 5 dni temu

That’s the far side.

pennomi, 5 dni temu

Yes the far side of the moon is colloquially (and incorrectly) called the dark side of the moon. Thanks for the correction.

agamemnonymous, 5 dni temu do astronomy w Scientists look to black holes to know exactly where we are in the Universe. But phones and Wi-Fi are blocking the view

I get the actual issue, but that title sounds hilariously boomer.

al_Kaholic, 5 dni temu do astronomy w Scientists look to black holes to know exactly where we are in the Universe. But phones and Wi-Fi are blocking the view

It’s starstink muskings up the sky.

ogmios, 5 dni temu do astronomy w Scientists look to black holes to know exactly where we are in the Universe. But phones and Wi-Fi are blocking the view

And slowly, society began to awaken to the reality that theirs was a civilization ruled by Mammon, not men.

freagle, 12 dni temu 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, 12 dni temu do astronomy w Astronomy has a major data problem. Simulating realistic images of the sky can help train algorithms

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, 15 dni temu do astronomy w The Cosmic Owl: Astronomers discover a peculiar galaxy merger

Just let him watch TV

https://static0.gamerantimages.com/wordpress/wp-content/uploads/2022/08/Adventure-Time.jpg

bleistift2, 15 dni temu 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, 15 dni temu do astronomy w The Cosmic Owl: Astronomers discover a peculiar galaxy merger

bipolar radio jet is stored in the balls

Lyrl, 2 miesiące temu 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.

pwnicholson, 2 miesiące temu do astronomy w Half of the universe's hydrogen gas, long unaccounted for, has been found

It’s always in the last place you look.

spankmonkey, 2 miesiące temu

Because you stop looking…

pwnicholson, 2 miesiące temu

Yes, that’s the joke.

Eldritch, 2 miesiące temu

No matter where you go, there you are.

Enkers, 2 miesiące temu

Because I’m in the last place I look?

sepi, 2 miesiące temu

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

thefartographer, 2 miesiące temu 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, 2 miesiące temu

Surprised jd vance face

Grandwolf319, 2 miesiące temu 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.

luckystarr, 2 miesiące temu 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, 2 miesiące temu

Thank you. Saved me a click?

OfCourseNot, 2 miesiące temu

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.