Recent comments in /f/space
Prestigious-Egg-5721 t1_jdz6ytm wrote
Reply to Why don’t we use Venus as a dumpster? by Postnificent
"Hey Chuck, get a load of this guy, he thinks his reddit post will get us to admit the thing about the Venusians"
[deleted] t1_jdz69q7 wrote
Reply to What do astronauts see on the ISS? by Ok_Astronomer_1308
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fainting-goat t1_jdz650h wrote
Reply to James Webb Space Telescope finds no atmosphere on Earth-like TRAPPIST-1 exoplanet by locus_towers
Alright, headline team, generate a more ambiguous way to phrase this.
I read it like they were comparing like Earth was the benchmark.
extra_specticles t1_jdz5lm3 wrote
Reply to What do astronauts see on the ISS? by Ok_Astronomer_1308
Well the ISS is only about 400km from earth, so what they see is pretty much the same, only not obscured by clouds and light pollution. 400km is only the distance from London to just past Paris. So they are not going to see much more than we do.
Ok_Astronomer_1308 OP t1_jdz4sl0 wrote
Reply to comment by sadetheruiner in What do astronauts see on the ISS? by Ok_Astronomer_1308
No it’s a question.
sadetheruiner t1_jdz4qqs wrote
Reply to What do astronauts see on the ISS? by Ok_Astronomer_1308
What? Are you answering your own question with an incomplete and inaccurate response?
[deleted] t1_jdz43rt wrote
Reply to Are galaxies just giant accretion disks around super massive black holes? by darthvadercock
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lezboyd t1_jdz42z2 wrote
Reply to comment by Just_wanna_talk in James Webb Space Telescope finds no atmosphere on Earth-like TRAPPIST-1 exoplanet by locus_towers
If you're curious not just about Venus, but for most of the planets and how they evolved, then I'd recommend watching the Mini Series 'The Planets (2019)' hosted by Brian Cox. It's only 5 episodes and they're pretty informative.
[deleted] t1_jdz3iip wrote
Reply to Why don’t we use Venus as a dumpster? by Postnificent
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Just_wanna_talk t1_jdz0trg wrote
Reply to comment by lezboyd in James Webb Space Telescope finds no atmosphere on Earth-like TRAPPIST-1 exoplanet by locus_towers
What was venus' atmosphere like before? Do we know?
motogucci t1_jdz0pb9 wrote
Innermost exoplanet around a star referred to as TRAPPIST-1. It's not so nearby as to be in our solar system.
There are 7 known exoplanets around this star, which is a little over 40 light years away. TRAPPIST-1 appears to be named after the telescope that initially discovered it in 1999. It would appear in the sky adjacent to the Aquarius constellation, on the side near Pisces.
But it is an ultra-cool red dwarf. Not quite 9% the sun's mass, and slightly larger in volume than Jupiter. (On the order of 100 times the mass of Jupiter.) You're unlikely to see it with the naked eye.
The suspicion due to understandings of such a star, is that the planets would all be tidally locked, and any atmospheres would have been blown away by their star early on. Using the assumption of tidal lock, the known orbital distance, and some imaging technique newly possible with the James Webb telescope, they have probably confirmed that there is no atmosphere. But supposedly there is a margin of error due to the limits of the imaging, that it could possibly have atmosphere up to 0.1 times as dense as Earth's.
ktElwood t1_jdz0o5c wrote
Reply to comment by theboehmer in Are galaxies just giant accretion disks around super massive black holes? by darthvadercock
Rather think of them as incredibly dense.
A black hole the mass of earth would be super small, but would have the same "gravitational pull"
jaibhavaya t1_jdz01j3 wrote
Reply to comment by Kenshkrix in Are galaxies just giant accretion disks around super massive black holes? by darthvadercock
I guess that makes sense… if matter wasn’t already coalescing, then what would have collapsed to create the initial black hole? The black hole forms an accretion disk, then the accretion disk pulls other matter into orbit… and suddenly you have a galaxy? So really the “rest” of the galaxy ends up orbiting around its collective center of gravity, that just so happens to be close to the center of this initial big ol’ black hole.
Or something like that? I read that on the underside of a Snapple cap.
thebigbroke t1_jdyz6zi wrote
Reply to comment by gamerzamer68 in Scientists discover supermassive black hole that now faces Earth by x3Smiley
I read the og article and had an existential crisis for the first part of my day and this put my mind at ease
TheCh0rt t1_jdyy4dr wrote
Reply to Why don’t we use Venus as a dumpster? by Postnificent
Buddy you need to go watch Interstellar, because the only thing that can transcend gravity is love.
dragonfly-winter-4 t1_jdyx3xg wrote
Reply to comment by Nerull in Are galaxies just giant accretion disks around super massive black holes? by darthvadercock
This is very interesting. I did not know this. Thank you
ForgoneProceedence t1_jdyx351 wrote
Reply to Black holes may be swallowing invisible matter that slows the movement of stars by trevor25
How do you know they are swallowing invisible matter and not slowing time instead?
[deleted] t1_jdyx1cz wrote
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tr14l t1_jdyvzpd wrote
Reply to comment by Postnificent in Why don’t we use Venus as a dumpster? by Postnificent
I mean messing with the sun without full understanding of its complexity seems reckless
No-Pirate-4752 t1_jdyvqvw wrote
Reply to Why don’t we use Venus as a dumpster? by Postnificent
I believe one must match the rate of acceleration and trajectory in order to collect ONE piece of space junk. The energy needs for this are IMMENSE. However, there is indeed a need to collect space junk and get itbout of orbit. For the safety of both government and commercial space flights.
Nerull t1_jdyv679 wrote
Reply to comment by thawed_froyo in Are galaxies just giant accretion disks around super massive black holes? by darthvadercock
Our orbital eccentricity would change slightly. I'm not sure the change would be large enough to even measure.
titanofmeme t1_jdyumit wrote
Reply to comment by Postnificent in Why don’t we use Venus as a dumpster? by Postnificent
No, you aren't. Many people have had the idea. We're just saying how this one in particular won't work. No need to be antagonistic.
titanofmeme t1_jdyuhjo wrote
Reply to comment by Postnificent in Why don’t we use Venus as a dumpster? by Postnificent
Yes it absolutely does. Planets of the solar system are the finest specimens in current astronomy due to their accessibility. As soon as they are contaminated, the specimen is compromised.
HealthyStonksBoys t1_jdz7fgj wrote
Reply to Would building a Dyson sphere be worth it? We ran the numbers. by cad908
Dyson spheres don’t seem plausible. To build a structure so large would change the gravitational equilibrium of the star system.