Recent comments in /f/space
Tairaa90 t1_jaeccwc wrote
Reply to comment by Tjam3s in Black holes may be quietly generating the force that is tearing the universe apart, experts say by dr_gus
I just listened to a Lex Fridman podcast with one of the authors and it didn't seem to me to be as much of an assumption as proposing a possible mechanism that needs to be figured out and then tested.
[deleted] t1_jaec0ab wrote
bookers555 t1_jaebv2i wrote
I hope it all goes well to them, competition is needed to get NASA and ESA off their ass.
[deleted] t1_jaebc16 wrote
House13Games t1_jaeb6ha wrote
Reply to comment by ChrisARippel in help in creating a space and board game by Dexters_Network
With realistic scale, Mercury will be about 0.5cm from the sun, and Nepture at 30cm. That's just the radius from the sun, so probably the biggest you wanna do for a normal table. You'll be needing a pin to place Mercury, rather than a square grid.
bookers555 t1_jaeb1n8 wrote
Reply to comment by longhegrindilemna in China unveils lunar lander to put astronauts on the moon by kevindavis338
>The ability of NASA to ignore SpaceX
They aren't, they need SpaceX for the moon landing. The whole plan is to get the SLS to launch a crewed Orion spacecraft to the Moon, rendezvous with the lunar lander variant of Starship in Lunar orbit and use it to land.
ForgiLaGeord t1_jaeaxhv wrote
Reply to comment by nednobbins in China to expand its space station, international astronaut selection underway by ye_olde_astronaut
It's been assembled out of many self-contained modules launched separately, just like the ISS, so it seems like it should be pretty open to reconfiguration and expansion.
SharpShockDimonds t1_jaeamq7 wrote
Reply to Interesting take on SpaceX’s 2023 Revenue by KotesFolly_
I really hope it's never taken public. It would all go downhill.
bookers555 t1_jaeampu wrote
Reply to comment by Stardustquarks in China unveils lunar lander to put astronauts on the moon by kevindavis338
You missed the SLS launch a few months ago? That rocket would have never taken off if it wasn't for China.
towkneeman777 t1_jaeajk8 wrote
Reply to How does time dilation affect our observations of very distant objects, considering the expansion of the fabric of the universe is causing them to become more and more distant? by HunkyMump
I guess I'm seeing myself outside our known or perceived universe and seeing it as like my hand covering the moon. Seeing it all in a glance.. it's all one time and space as I see it... It's about how it's perceived to the observer..
dittybopper_05H t1_jaea73y wrote
Reply to How does time dilation affect our observations of very distant objects, considering the expansion of the fabric of the universe is causing them to become more and more distant? by HunkyMump
All I know is that I wanted to be very distant when my wife was fully dilated.
Nerull t1_jaea6ue wrote
Vertically launching rockets try to get out of the dense atmosphere as quickly as possible, so an air breathing engine wouldn't work for very long - Falcon 9 is above 30000 ft about 1 minute after launch, and above 50000 ft 20 seconds later. The added cost and complexity of another stage for such a short period of the flight aren't really worth it.
[deleted] t1_jaea6tw wrote
[deleted] t1_jaea3la wrote
volcanopele t1_jae9180 wrote
Reply to The Case for Callisto by MoreGull
Except every time you come back into the hab there is the brown soot that you can't get off your boots so it gets tracked everywhere...
But seriously, about the water ice. Yes it is easily available on the surface, certainly more so than say the Moon, but in many places it is buried underneath a lag deposit of [insert non-ice component name here]. So the easiest exposures are on steep slopes.
Dexters_Network OP t1_jae85z6 wrote
Reply to comment by ChrisARippel in help in creating a space and board game by Dexters_Network
do you have any reference of this? or you personally created this?
theexile14 t1_jae7zee wrote
Reply to comment by Pigs_in_the_Porridge in We need more rules for space junk and moon bases, NASA and US officials say by DevilsRefugee
I have worked in space debris tracking before. I'm not forgetting anything. Low LEO clears in a relatively short period of time, it is not at serious risk. High LEO...I mentioned? You seem to be freaked out that I didn't mention a specific term that's become overly common amongst those who don't understand the environment.
The most serious risks to High LEO are what I mentioned: ASATs and breakups of non-operating satellites. If those continue to happen unabated for some time then we can start to worry about Kessler Syndrome. Too many people watched Gravity and took it as a real risk.
[deleted] t1_jae7wxv wrote
Reply to comment by ChrisARippel in help in creating a space and board game by Dexters_Network
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Ceekay151 t1_jae7wvx wrote
Reply to We need more rules for space junk and moon bases, NASA and US officials say by DevilsRefugee
Better late than never, if it can be decided who will & how will they be enforced...
[deleted] t1_jae7fip wrote
Reply to comment by [deleted] in China unveils lunar lander to put astronauts on the moon by kevindavis338
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failurebeatssuccess t1_jae6l0n wrote
Reply to comment by towkneeman777 in How does time dilation affect our observations of very distant objects, considering the expansion of the fabric of the universe is causing them to become more and more distant? by HunkyMump
Well it looks pretty uniform from what we can see (and we can see a lot of it - the observable universe is huge). There is no good reason to assume there is anything particularly atypical about 'our bit' of the universe and the unobservable universe would be any different).
[deleted] t1_jae6ig6 wrote
Reply to comment by macbowes in Black holes may be quietly generating the force that is tearing the universe apart, experts say by dr_gus
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Tjam3s t1_jae6gkd wrote
Reply to comment by MayThe4thCakeDay in Black holes may be quietly generating the force that is tearing the universe apart, experts say by dr_gus
I suppose the part they seem to assume is that the black hole is the cause for dark energy, but without actual study into the real cause for the correlation.
It might be the other way around with the expansion of the universe causing the growth, or it may be an indirect mechanism being the cause for both of them.
The assumption that the black hole is helping cause the expansion is what I was digging at.
[deleted] t1_jae63pn wrote
Reply to comment by RoDeltaR in Black holes may be quietly generating the force that is tearing the universe apart, experts say by dr_gus
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Am_Seeker_731 t1_jaeel5a wrote
Reply to We need more rules for space junk and moon bases, NASA and US officials say by DevilsRefugee
Just send space junk on a direct path for the sun