Recent comments in /f/space
ArcticHelix OP t1_je9szaz wrote
Reply to comment by Upholder93 in G forces and turning in space by ArcticHelix
Do you think that creating and manipulating gravity is possible in the future and if so would it be used?
sunflower906 t1_je9ss6c wrote
That's spectacular! I don't have telescopes yet and would love to buy one when I'm older. I'd be psyched if anybody uploaded the pictures here.
nighthawk_something t1_je9sjjx wrote
Reply to comment by Anderopolis in Frank Rubio's first spaceflight will turn into the longest mission by a US astronaut by gordon22
A work year (i.e. minus vacation)
Upholder93 t1_je9sdyb wrote
Reply to comment by ArcticHelix in G forces and turning in space by ArcticHelix
Objects in freefall do not feel the effects of g-forces. This is why astronauts on the ISS are weightless, despite the gravity in LEO being almost the same as at the surface.
So it is possible for objects to move in a curve without feeling the effects of acceleration. However it requires they be accelerated by gravity and nothing gets in their way (the ISS is always accelerating toward the centre of the earth, it just has enough lateral momentum that it never hits it).
Conceptually, if you could create and manipulate gravitational fields, you could accelerate without feeling g-forces.
ArcticHelix OP t1_je9satn wrote
Reply to comment by phoenixliv in G forces and turning in space by ArcticHelix
Will space travellers in the future have to plan around the gravitational field of large objects in space? Or will it not be a problem
JungleJones4124 t1_je9saca wrote
Reply to comment by bookers555 in NASA delays flight of Boeing’s Starliner again, this time for parachutes by thawingSumTendies
>how long has this thing been in development now?
If I told you it started in 2010, how infuriated would you be?
ArcticHelix OP t1_je9s5ix wrote
Reply to comment by dirschau in G forces and turning in space by ArcticHelix
Will humans feel the same amount of gs in a turn in space and on earth or will one be able to turn sharper even if it is slight?
Uncle_Boppi t1_je9rw3s wrote
I think about it a lot, especially looking up at the sky, it gives me so much anxiety and wonderment of what could possibly be up there.
[deleted] t1_je9rsph wrote
Reply to The brightest gamma-ray in human history hit our planet this past Fall by PuzzleheadedOne1428
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TbonerT t1_je9rryu wrote
Reply to comment by bookers555 in NASA delays flight of Boeing’s Starliner again, this time for parachutes by thawingSumTendies
> maybe Starship and who knows when that will be operational.
It just has to be operational before the next SLS flight in November of next year to be competitive. Since there are multiple boosters and Starships ready to fly or under construction, they are well on their way to beating the next SLS launch.
[deleted] t1_je9rp7m wrote
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Last_third_1966 t1_je9roj9 wrote
Reply to comment by Understands-Irony in The brightest gamma-ray in human history hit our planet this past Fall by PuzzleheadedOne1428
This is comment is an example of inverse gamblers fallacy.
fleranon t1_je9rlel wrote
Reply to comment by Secret-Head-6267 in The brightest gamma-ray in human history hit our planet this past Fall by PuzzleheadedOne1428
Same! I think I even read something once that linked Gamma Rays to Fermi's great Filter. Instant death by massive Space Ray, Zzzzzap. Perhaps Science Mags tend to be overly sensationalistic sometimes :)
Analyst7 t1_je9qvh7 wrote
Reply to G forces and turning in space by ArcticHelix
You're conflating static G forces which are gravity based with acceleration forces. Your relative weight (static force) is higher or lower depending on the size of the mass exerting the force. Applied force (kinetic) is created by acceleration and are applied everywhere, even in space.
Nonsenseinabag t1_je9qhw9 wrote
Reply to comment by stappernn in Frank Rubio's first spaceflight will turn into the longest mission by a US astronaut by gordon22
Personally it'd be that you can never properly go outside that would do me in. Even if you're on a spacewalk you're still in a confined space suit.
[deleted] OP t1_je9qf6e wrote
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ArcticHelix OP t1_je9q1ms wrote
Reply to comment by triffid_hunter in G forces and turning in space by ArcticHelix
Do you think in the future this might affect space travel in any way?
phoenixliv t1_je9pvu4 wrote
Reply to G forces and turning in space by ArcticHelix
The sensation on zero g in space is because they’re in orbit falling around and around the planet. We’re affected by all the planets and the moon and everything in the universe to some small degree. Gravity is stronger when something is dense and or close though.
triffid_hunter t1_je9pu6z wrote
Reply to G forces and turning in space by ArcticHelix
> Since g forces are based on gravity
They're not, they follow f=mA.
A vessel with sufficient thrust could crush astronauts into a thin paste even if it's already in orbit.
dirschau t1_je9pu5t wrote
Reply to G forces and turning in space by ArcticHelix
"G forces" is only a common term for people being squished against stuff by inertia ("certrifigal force"). No gravity necessary.
The only connection to gravity is that it's measured in multiples of gravitation acceleration at the earth's surface, aka "g". Because it's something we're familiar with and it's easy to translate into effects on the human body.
BmanUltima t1_je9ppnq wrote
Reply to comment by ArcticHelix in G forces and turning in space by ArcticHelix
No, because turning is a change in velocity.
Andromeda321 OP t1_je9pock wrote
Reply to Gaia discovers a new family of black holes: astronomers studied the orbits of stars and noticed that some of them wobbled on the sky, as if they were gravitationally influenced by massive objects. No light could be found using telescopes, leaving only one possibility: black holes. by Andromeda321
Astronomer here! I posted about a month ago about helping discover the second closest black hole to Earth. At that point, we hadn’t undergone peer review, but in the first time in memory the paper was accepted with absolutely no comments by the referee. Huzzah! So thanks to such a speedy process, the paper is published today and we got to do a press release celebrating this new black hole population we are uncovering in our neighborhood!
Can’t wait to see what we find next!
ArcticHelix OP t1_je9pnf0 wrote
Reply to comment by BmanUltima in G forces and turning in space by ArcticHelix
Is there a possible situation where they do not apply in turning?
calabazookita t1_je9pm2c wrote
Reply to comment by AwesomeMindSlayer in The brightest gamma-ray in human history hit our planet this past Fall by PuzzleheadedOne1428
r/oddlyspecific r/timetravel
JungleJones4124 t1_je9t2os wrote
Reply to comment by TbonerT in NASA delays flight of Boeing’s Starliner again, this time for parachutes by thawingSumTendies
It doesn't matter how reliable the Falcon 9 and Dragon are. It's great that they are reliable, but anything made my people will eventually fail. I'm not going to speculate on how/when because we could be here for the rest of the week.
Boeing has had a lot of difficulties and I'm not a fan of Starliner. The only way for Boeing to even start to get close to the reliability of Falcon and Dragon is to launch when its safe to do so. Will this be a long term spacecraft? Absolutely not. It will be rarely used, but it is still necessary.