Hello u/Ok-Internet7999, your submission "Potentially a dumb question about the centre of our galaxy." has been removed from r/space because:

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Hello u/hornylazyninza, your submission "In which direction Voyager 1 was set off in space? Is it forever going in east direction?" has been removed from r/space because:

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Hello u/Globe_Worship, your submission "Will Virgin Galactic have commercial space flights by 2025?" has been removed from r/space because:

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Yes, I know. I addressed radio telescopes specifically in the first paragraph. But the comment I replied to was talking about telescopes in general, and that's what I was responding to.

No. Massive radio telescopes like FAST and Arecibo can't feasibly be built in space, and outside some exceptions they'd actually perform worse orbiting earth than on it, since they'd be exposed to more of our radio noise. If we could build over on the far side of the moon it'd be a lot better, but we're not capable of that right now.

And outside radio telescopes ground based visible light telescopes are still extremely important. Back when Hubble was launched atmospheric distortion was a problem for telescopes, but it isn't anymore. Adaptive optics technology allows it to be almost entirely corrected, and with no launch vehicle restrictions ground based telescopes can be built far bigger. Hubble and the James Webb Space Telescope are not the most powerful telescopes ever built, not by a decent margin. Hubble has a 2.4 metre mirror and JWST's is 6.5m, while the largest terrestrial trlescope currently in use is 10m.

And in the near future that'll go a lot further, with the ESO's Extremely Large Telescope coming online in the 2020s with a 39 metre mirror. Back when Hubble was launched space telescopes could get clearer images than ground based ones, but that's not the case anymore. These days the utility of space telescopes is in wavelengths of light that don't penetrate earth's atmosphere, primarily infrared. That's why Hubble was retrofitted for more infrared capabilities during it's servicing missions, and JWST is an entirely infrared telescope.

Hello u/the_j4k3, your submission "If someone builds a space elevator, what is its clear night visibility distance? If a station was grounded in Los Angeles, how far away would it be visible assuming the station is many times the size of the ISS?" has been removed from r/space because:

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Hello u/fontimus, your submission "Have you ever witnessed a star 'blip'?" has been removed from r/space because:

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Hello u/regrettinglifelol, your submission "Dumb? Question" has been removed from r/space because:

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Hello u/Clean-Membership-308, your submission "My theory of the universe" has been removed from r/space because:

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It's just something that's smudged and out of focus, could be literally anything. A star, a planet, a bug that flew in front of the telescope.

Hello u/Ok-Cryptographer2063, your submission "Has anyone seen this picture yet?" has been removed from r/space because:

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But there isn't any sort of cycle or anything, that's the point. A year is just a number, every year it goes up by one. So in 100 billion years it'll be the current year plus 100 billion. There's nothing special going on with how time flows or anything.

That's not any sort of cycle or anything. CE or common era is the modern way of saying AD, which stands for Anno Domini, which is Latin for the year of our Lord. The year zero used to be defined as the year Jesus was supposedly born, and CE is just a way to keep using this date system without tying it to a specific religion. We won't be adding new or different letters or anything.

What do you mean by in theory? Years are just numbers, so add 100 billion to the current year (2022) and that's the answer.

Hello u/Naive-Gene-7583, your submission "What Earth year would it be after 100 billion years from now in theory?" has been removed from r/space because:

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Hello u/Fast-Quit9212, your submission "Has Betelgeuse gone supernova yet?" has been removed from r/space because:

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Hello u/Afraid_Success_4836, your submission "My (still kinda WIP) planet definition" has been removed from r/space because:

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Like other comments have pointed out, a big reason there's not so much hype right now is that it won't actually reach Europa until the 2030s. It'll be huge when it does though.

Vacuum doesn't create negative pressure, the atmosphere creates positive pressure. For us on earth this difference isn't significant, but it does explain stuff like why the vacuum of space doesn't pull the atmosphere off the earth.

So when your teacher opens the vacuum flask and lets the air rush in it isn't because the vacuum inside the flask pulls the air in, it's because the air pressure outside pushes it in.

Hello u/jtlickl1, your submission "Confusing Question." has been removed from r/space because:

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Hello u/_anti_human_, your submission "Why is it scary?" has been removed from r/space because:

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Hello u/Courcy6185, your submission "Do 2 objects on opposite "ends" of the universe pull on each other to some extremely minute degree?" has been removed from r/space because:

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Moons don't have to form like that, that's just how earths moon formed.

Hello u/Burning_Toast998, your submission "How can moons be formed around planets like Jupiter or Uranus?" has been removed from r/space because:

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