Recent comments in /f/space
[deleted] t1_j6hxkk5 wrote
SpaceGoatAlpha t1_j6hxd1f wrote
Reply to Is universe going to live forever?Is there any theory which states that life is going to find a way where life is always sustainable? by 000genshin000
Pretty much everything we know at this point says that no, the universe as we know it is not going to exist forever. Life as we know it needs a place to be and something to be made out of in order to exist.
The good news is that unless something really dramatic happens, it probably won't be for a while.
lucellent t1_j6hx0rh wrote
Reply to comment by Mishung in ‘Extraordinary’ footage shows one of the closest known approaches of a near-Earth object — On 26 Jan. 2023, asteroid 2023 BU was about 2,200 miles above the surface of the Earth by marketrent
People still don't know about Ad Blockers?
realcevapipapi t1_j6hvxiq wrote
Reply to comment by sthrone11 in ‘Extraordinary’ footage shows one of the closest known approaches of a near-Earth object — On 26 Jan. 2023, asteroid 2023 BU was about 2,200 miles above the surface of the Earth by marketrent
I know what I'm about to out on and watch
Would you like to know more?
414A44 t1_j6hvaxf wrote
Reply to comment by db720 in What if the planet stopped rotating? by bubba_boo_bear
Gotta realise a reference is to obscure when you come back to point that out and can't remember where it's from yourself.
ChronicBuzz187 t1_j6hv3ot wrote
Reply to comment by corsairealgerien in Number of manned orbital launches by year, 1961-2022 by firefly-metaverse
>And it is not beyond the realm of possibility that they say, 'Keep out, we're here, this is our territory.'"
The small-mindedness of this.... going to the moon or mars not to advance the entire species but to say "Look, we're the best and smartest humans on earth because we somehow made it here" when you really just build upon the work of generations that came before.
And we always have to "beat each other there" because... well... we don't really know except so we can bang out chest and tell everybody how great we are. No real point in it but that never prevented us from doing it, right?
buffetcaptain t1_j6hup2p wrote
Reply to comment by Creepy_Toe2680 in NASA tested new propulsion tech that could unlock new deep space travel possibilities by Creepy_Toe2680
The distance to Mars changes depending on the respective orbits, at the closest point it's about half that.
genowhere t1_j6htf8w wrote
Reply to ‘Extraordinary’ footage shows one of the closest known approaches of a near-Earth object — On 26 Jan. 2023, asteroid 2023 BU was about 2,200 miles above the surface of the Earth by marketrent
After the 30 second Discover ad continued to repeat I seriously wish that the next near approach actually hits us and disintegrates the entire planet.
mangalore-x_x t1_j6hsmif wrote
Reply to comment by Jakebsorensen in Number of manned orbital launches by year, 1961-2022 by firefly-metaverse
If they launch US astronauts to the ISS it would be a NASA mission though.
As a private company they just provide the product that allows this mission to be done.
Alcoraiden t1_j6hs9zl wrote
Reply to comment by corsairealgerien in Aldebaran and the legacy of Arabic star names by AstronomicVerse
Got my name from the scads of Al- names
Ho3n3r t1_j6hqsgo wrote
Reply to ‘Extraordinary’ footage shows one of the closest known approaches of a near-Earth object — On 26 Jan. 2023, asteroid 2023 BU was about 2,200 miles above the surface of the Earth by marketrent
That is the most massive exaggeration of the "space rock" I've seen so far. By next week, it'll be as big as Jupiter.
Creepy_Toe2680 OP t1_j6hpwar wrote
Reply to comment by corsairealgerien in NASA tested new propulsion tech that could unlock new deep space travel possibilities by Creepy_Toe2680
various factors affect this such as vehicle size and many more
maybe my calculation is wrong.
corsairealgerien t1_j6hppu5 wrote
Reply to comment by Creepy_Toe2680 in NASA tested new propulsion tech that could unlock new deep space travel possibilities by Creepy_Toe2680
2 years and 22 days? But the original quote said it takes 6 months to get to Mars at the moment?
HIMP_Dahak_172291 t1_j6hpgfi wrote
Reply to comment by Sumwan_In_Particular in Asteroids sudden flyby shows blind spot in planetary threat detection by coinfanking
From what I have read the rubble asteroids are the hardest to do something about. We can redirect a lump of iron provided we have enough warning, but rubble asteroids are much trickier since you cant just push them out of the way. The only two options are gravity tractor or demolition. Neither option is easy and both require lots more advanced warning compared to a similar mass solid asteroid.
Bunker busters wouldnt be particularly useful since the warhead wouldnt survive the impact at the speeds necessary to get sufficient penetration on a rubble asteroid big enough to need redirection. The drone idea is harder, but if you can get several deep enough with big enough bombs the blast should at least nudge the thing off course.
[deleted] t1_j6hp72s wrote
Reply to comment by EduardoVrd in Sunday afternoon moon, Southern hemisphere shot by EduardoVrd
[removed]
EduardoVrd OP t1_j6hp50v wrote
Reply to comment by Suitable-Victory-105 in Sunday afternoon moon, Southern hemisphere shot by EduardoVrd
Yes, the t-ring is just the extension of the DSLR camera that goes inside the telescope, so.. you use the telescope focuser to get the better result in the image you are seeing through the DSLR screen. That's how i do it.
Creepy_Toe2680 OP t1_j6how4h wrote
Reply to comment by corsairealgerien in NASA tested new propulsion tech that could unlock new deep space travel possibilities by Creepy_Toe2680
uhh looks like i have to do some research and math here soo..
i am gonna use the second one (but i don't know if it is talking about the vehicle or the wave.)
distance from mars (130,000,000 km)
speed of detonating engine = 2km/s
so, 130000000/2= 65000000 seconds = 752.31481481 days or 2 years and 22 days.
not sure don't quote me on this.
edit: YES I knew it i was right that i was wrong!
urmomaisjabbathehutt t1_j6ho8ye wrote
Reply to comment by corsairealgerien in NASA tested new propulsion tech that could unlock new deep space travel possibilities by Creepy_Toe2680
this is an engine showcasing newer material manufacturing tecnics such as additive manufacturing, these tecnics allow more resilience and temperatures needed for this type of engine
in theory ths will allow a type of engine that is simpler and more efficient but it has its own challenges, for instance solving instabilities
Suitable-Victory-105 t1_j6ho4zb wrote
Reply to comment by EduardoVrd in Sunday afternoon moon, Southern hemisphere shot by EduardoVrd
How does it focus? Does it just focus using the telescope focuser?
corsairealgerien t1_j6hnt3s wrote
Reply to comment by Creepy_Toe2680 in NASA tested new propulsion tech that could unlock new deep space travel possibilities by Creepy_Toe2680
Is there a similar estimate as to the difference RDRE would make? Or is it more the case of RDRE being more efficient in fuel terms, allowing for longer flights, rather than making them faster per se?
EduardoVrd OP t1_j6hnsgw wrote
Reply to comment by Suitable-Victory-105 in Sunday afternoon moon, Southern hemisphere shot by EduardoVrd
Using a t-ring 💪
Creepy_Toe2680 OP t1_j6hnffp wrote
Reply to comment by corsairealgerien in NASA tested new propulsion tech that could unlock new deep space travel possibilities by Creepy_Toe2680
Nuclear powered
>This isn’t the only way that NASA is looking at revolutionizing deep space travel. The space agency is reportedly looking into nuclear-powered spacecraft, which would allow spacecraft to travel further distances without needing liquid fuel. It would also make the journey to Mars significantly shorter, from six months to just 45 days.
corsairealgerien t1_j6hn22i wrote
Reply to comment by Creepy_Toe2680 in NASA tested new propulsion tech that could unlock new deep space travel possibilities by Creepy_Toe2680
>It would also make the journey to Mars significantly shorter, from six months to just 45 days.
Is this with RDRE or the proposed nuclear-powered system?
nicuramar t1_j6hmj0f wrote
Reply to comment by halpless2112 in ‘Extraordinary’ footage shows one of the closest known approaches of a near-Earth object — On 26 Jan. 2023, asteroid 2023 BU was about 2,200 miles above the surface of the Earth by marketrent
> Try to identify humor as much as you can
It’s tricky and subjective.
hanoodle t1_j6hxl6o wrote
Reply to Is universe going to live forever?Is there any theory which states that life is going to find a way where life is always sustainable? by 000genshin000
Life cannot exist as we know it forever
Eventually light will be slower than the expansion of the universe , so there won't be any perception of things as for us light = information
Everything else is a guess from me 👍