Recent comments in /f/space
[deleted] t1_jaabm1g wrote
Reply to comment by petrol_roses in my best pic of the moon yet by otemetoot
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OddClass134 t1_jaabdhx wrote
Reply to comment by ForTech45 in How to make a model of dark matter and energy? by Poise-on
I dont hope to put anyone on blast, as it wasnt my presentation or my paper and I may be wrong.
I also think Im not being clear here when I say "theory" and considering the topic, I probably shouldnt throw that term around. I meant more the argument of looking at modifications of GR rather than for undiscovered particles. Which modification one supports is a different discussion.
[deleted] t1_jaaath2 wrote
Reply to comment by EmpathyZero in Regarding buying a telescope by Smitrang
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[deleted] t1_jaaamfv wrote
Reply to comment by lorfeir in Regarding buying a telescope by Smitrang
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Gorrium t1_jaaaf7o wrote
Reply to Could the international space station be repurposed as an interplanetary vessel, a La For All Mankind? by -Major-Arcana-
Could you? yes, probably, but it would be so expensive and difficult it probably wouldn't be worth it.
First the ISS doesn't have a lot of living space, probably too cramped for a long mission. Second it has no radiation shielding, which would be big, heavy and expensive to retrofit. Third, it's old and you should probably repair and upgrade it before sending it to Mars. Fourth, it would need a new engine and massive fuel tank. Fifth, it doesn't have enough electricity production for deep space, so it would need more solar panels or a nuclear reactor. Sixth, its in the wrong orbit, it's or it was picked to make it easier for Russia and Japan to send payloads to it, it's very inclined. (I think, I'm not so great at orbital mechanics.)
JJ3qnkpK t1_jaa9yoz wrote
Reply to comment by its_justme in My two year progress shooting Jupiter, using the same $300 telescope! by theillini19
It's all actually one picture. It brought friends!
[deleted] t1_jaa8v2q wrote
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takkun169 t1_jaa8kr4 wrote
Reply to Who pays for space debris removal? by DevilsRefugee
Not the companies that send that shit up there, too be sure.
JGrill17 t1_jaa8e3m wrote
Reply to Who pays for space debris removal? by DevilsRefugee
Someday someone's gonna salvage all that junk for profit don't think it's gonna be done for the good of humanity lol
Pigs_in_the_Porridge t1_jaa86y8 wrote
Reply to comment by bangonthedrums in Who pays for space debris removal? by DevilsRefugee
You are very ill informed, eg. ignorant.
Do you know what a guidestar is? Do you know about adaptive optics?
Exoplanet hunting is very much done on the ground.
The black hole at the center of the Milky Way was discovered using telescopes in Hawaii. Won a Nobel Prize a few years ago.
And many many other recent discoveries.
SpaceX shills push this line and it is very much demonstrably false. Thousands of astronomers rely on ground based optical astronomy for their careers and they are extremely POed that a private company can ruin their work for profit.
[deleted] t1_jaa7n8g wrote
Reply to Who pays for space debris removal? by DevilsRefugee
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ForTech45 t1_jaa67si wrote
Reply to comment by OddClass134 in How to make a model of dark matter and energy? by Poise-on
What did he call the theory? What was the speakers name?
There are many alternatives, but very few are fleshed out and most are just frameworks
mumblesjackson t1_jaa631h wrote
Reply to comment by PicassoMars in Why are Most Meteorites Found in Antarctica? by ChieftainMcLeland
Just like Imperial Probe Droids
andygates2323 t1_jaa4rhr wrote
Reply to comment by ShortfallofAardvark in Who pays for space debris removal? by DevilsRefugee
Yep, this is how it will work. A chunk of each launch permit fee goes into a clearance pot.
[deleted] t1_jaa445q wrote
Reply to comment by RoyalFalse in The Case for Callisto by MoreGull
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Blue_my_eyes t1_jaa414x wrote
Reply to comment by marriageisprison in How big was the point of dense energy before the Big Bang? by ClassicSpurzy
What really gets me with it is that there could be remnants of the previous universes outside of our own
aramil2001 t1_jaa3ct0 wrote
Reply to comment by TiggerTheMad in Who pays for space debris removal? by DevilsRefugee
Well some quick googling shows I was incorrect they stopped sending RTGs in the 80s so the majority of the cost is getting crews up there. I’d think if it was satellite removal there’d be enough gold and valuable materials to make a profit
zeeblecroid t1_jaa36hv wrote
Reply to comment by Gen_Ripper in Who pays for space debris removal? by DevilsRefugee
Pretty much. It's a black hole into which VC dollars fall and no useful product will escape, at least with any of the startups claiming to be working on the problem. They're always talking about direct physical rendezvous with some gimmicky method of capturing one single piece of debris, which isn't ever going to so much as dent the problem.
It's laser brooms or nothing, and none of the startups are looking in that direction - again, because none of them have any real intention of following through anyway.
Decronym t1_jaa33m1 wrote
Reply to Who pays for space debris removal? by DevilsRefugee
Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I've seen in this thread:
|Fewer Letters|More Letters| |-------|---------|---| |IM|Initial Mass deliverable to a given orbit, without accounting for fuel| |LEO|Low Earth Orbit (180-2000km)| | |Law Enforcement Officer (most often mentioned during transport operations)| |RTG|Radioisotope Thermoelectric Generator| |VLEO|V-band constellation in LEO| | |Very Low Earth Orbit|
|Jargon|Definition| |-------|---------|---| |Starlink|SpaceX's world-wide satellite broadband constellation|
^(5 acronyms in this thread; )^(the most compressed thread commented on today)^( has 17 acronyms.)
^([Thread #8628 for this sub, first seen 27th Feb 2023, 23:10])
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marriageisprison t1_jaa32za wrote
Reply to comment by Blue_my_eyes in How big was the point of dense energy before the Big Bang? by ClassicSpurzy
This is my favorite Cosmological ideal. The Big Bang and Big Crunch. The Universe is born, grows, then dies a cold death. Entropy eventually causes the expansion to slow down, stop, and finally reverse down to another singularity.
petrol_roses t1_jaa2gqg wrote
Reply to comment by frhgm in my best pic of the moon yet by otemetoot
Correct! it can be fixed with a simple click in Adobe lightroom.
CardboardSoyuz t1_jaa2by2 wrote
Reply to The Case for Callisto by MoreGull
I agree Callisto has promise but the delta-V to get to the surface of Callisto from LEO is like 28 kps, and the delta V to get to the surface of Mars is about 10 kps and Callisto is no help with the aerobraking.
majorbraindamage t1_jaa29hb wrote
Reply to Could the international space station be repurposed as an interplanetary vessel, a La For All Mankind? by -Major-Arcana-
Probably not a good idea. It's old and has been stressed under pressure and the electronics exposed to cosmic rays for a long time. A mission to Mars should be a mission specific craft that is fresh and likely to not break down millions of miles from home with no help available. A manned mission to Mars has to go right the first time, or risk losing public support.
jaeke t1_jaa1ptd wrote
Reply to comment by trhaynes in Who pays for space debris removal? by DevilsRefugee
My neighbor?
Astromike23 t1_jaac9e2 wrote
Reply to comment by JetAmoeba in My two year progress shooting Jupiter, using the same $300 telescope! by theillini19
> what’s your light pollution level?
Pro-tip: Jupiter is bright enough that you can image it even from the middle of a large city.