Recent comments in /f/space
[deleted] t1_j2airb6 wrote
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Left_Entrepreneur_39 t1_j2ai6mq wrote
Elite Dangerous maybe. I play Eve Online a lot but not sure that’s what you’re looking for
robertojh_200 t1_j2ai51v wrote
Reply to comment by Reddit-runner in SpaceX launches Israeli reconnaissance satellite and lands rocket, marking 61st and final flight of 2022 by marketrent
Certainly not anytime soon. I could see a space-built ship, like an Aldrin cycler, coming about down the line when we have more established manufacturing infrastructure in space already. The gravity well of earth is something that we are going to eventually have to circumvent, as it’s the single most prohibitively expensive part of space travel.
But we can’t get to that point without multipurpose vehicles like starship, the ships that will establish the infrastructure in space that is needed in order to build something like that in the first place. Colonies, manufacturing, in situ resource utilization, etc. all of that doesn’t happen until starship launches, and hopefully it’s only the first. I’m also excited about the neutron rocket from rocket lab; it’s not as powerful as starship but it is approaching the weight class as a heavy multi purpose vehicle.
The_Vinegar_Strokes t1_j2ahi0r wrote
Reply to comment by Youria_Tv_Officiel in In which space simulator can I see science fiction stuff? by JediMastoras
Dyson Sphere isn't too hard-core of a simulator but it's a great game!
Cyoarp t1_j2ah9pi wrote
Reply to What is our current "best guess" about how to observers that entered a black hole on opposite sides would look to each other once they crossed the event horizon? by WittyUnwittingly
They wouldn't have time to recognize each other. For one thing specification of course would have killed any living observers on contact with the event horizon, the other thing to consider though is that they'll be moving towards each other faster than the speed of light. If two objects are moving near the speed of light and they happen to be moving in opposite directions then they are moving towards each other at faster than the speed of light.
What this means is they'll never know that each other existed. The closer to the singularity you are the faster you move when you get up to relativistic speeds the slower time moves and the more gravity present the slower time moves. Once you cross the event horizon gravity in the speed of your motion or going to mean that you can't actually ever observe anything in the other side of the black hole.
dittybopper_05H t1_j2ags41 wrote
Reply to comment by allthesamepieman in Just back from witnessing a test firing of a rocket motor that my neighbor built by goatharper
>Nuclear power is used to generate electricity which in turn powers electric motors.
Not always. Often, a PWR (pressurized water reactor) is used with a closed loop of superheated water that turns water into steam in a heat exchanger in order to directly drive propulsive turbines which are geared directly to the screws.
For example, the USS Tullibee was the first US submarine to use turbo-electric drive like you're thinking of, all of the other nuclear submarines before it used direct drive.
And almost all of the submarines afterwards. The Los Angeles class, for example, has the turbines connected physically to the screw, as does the current Virginia class subs (connected physically to the pumpjet).
In fact, I don't think the US has any nuclear powered ships that use turbo-electric propulsion. I know the Royal Navy does, though.
[deleted] t1_j2agjwj wrote
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NumpyNimpy t1_j2ag9tw wrote
Reply to comment by blackenswans in South Korea's test flight of solid-propellant space launch vehicle successful - ministry by Soupjoe5
You be surprised how much ballistic missiles have in common with rockets..
Reddit-runner t1_j2aft0h wrote
Reply to comment by robertojh_200 in SpaceX launches Israeli reconnaissance satellite and lands rocket, marking 61st and final flight of 2022 by marketrent
I can't count anymore the number of discussions I had about why building a giant Mars ship in LEO with Starship will neither be cheaper nor faster than riding Starship to Mars directly.
Dedicated and highly specialised vehicles for every little task seems to be ingrained into most minds. (Honestly I blame the architecture of the Apollo program for this)
And on top of that comes the illogical dismissal of everything SpaceX/Musk, as you said.
It's an uphill battle for something that actually should excite people naturally.
MadNhater t1_j2af7ze wrote
Reply to comment by JohnyAngelo in South Korea's unannounced rocket launch causes UFO scare by scot816
The South Koreans take aliens more serious than N Korea.
dittybopper_05H t1_j2af5l2 wrote
Reply to comment by Yippeethemagician in Just back from witnessing a test firing of a rocket motor that my neighbor built by goatharper
That depends on the application. For some applications, nuclear reactors are the best option.
[deleted] t1_j2aeo6r wrote
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hsizeoj t1_j2aeb9x wrote
No mans sky is super fun, i can’t recommend enough. That being said it takes a few hours of play before it really gets going.
CaptMackenzieCalhoun OP t1_j2ae9lf wrote
Reply to comment by cratermoon in Chart of the Day: 30 years of China's manned space program by CaptMackenzieCalhoun
It’s not misleading . The man program started with approval in 1992. It took 10 year development to get a person in space. China celebrate it’s anniversary at the start of their programs.
https://en.wikipedia.org/wiki/China_Manned_Space_Program?wprov=sfti1
superVanV1 t1_j2adwex wrote
Reply to comment by kclongest in What is our current "best guess" about how to observers that entered a black hole on opposite sides would look to each other once they crossed the event horizon? by WittyUnwittingly
Yeah, fringe physics tends to do that
LittleKittyLove t1_j2ad88p wrote
Reply to comment by ballrus_walsack in South Korea's unannounced rocket launch causes UFO scare by scot816
I heard the bot is actually aliens
Youria_Tv_Officiel t1_j2acy2v wrote
Can't think of many, maaaayyyybe dyson sphere program but I did not hear much from it.
Space Engineers, while straying off from the realistic space simulator (still good though) can support space elevators, no dyson sphere though.
kclongest t1_j2acvn9 wrote
Reply to comment by superVanV1 in What is our current "best guess" about how to observers that entered a black hole on opposite sides would look to each other once they crossed the event horizon? by WittyUnwittingly
Y’all just made my brain splode
robertojh_200 t1_j2acp0h wrote
Reply to comment by Reddit-runner in SpaceX launches Israeli reconnaissance satellite and lands rocket, marking 61st and final flight of 2022 by marketrent
Or just outright discredit it because of musk.
Never mind spaceX being the most successful, and advanced, launch organization in history. people are blinded by cynicism and hatred, and so often they don’t even realize it themselves
Reddit-runner t1_j2ac259 wrote
Reply to comment by robertojh_200 in SpaceX launches Israeli reconnaissance satellite and lands rocket, marking 61st and final flight of 2022 by marketrent
Sadly this thinking still seems to resonate with too few people...
You will find far too often comments on such systems being "wasteful".
robertojh_200 t1_j2a9u02 wrote
Reply to comment by Reddit-runner in SpaceX launches Israeli reconnaissance satellite and lands rocket, marking 61st and final flight of 2022 by marketrent
This is the real core of the promise of starship. 100 tons to LEO or the moon, that opens up the solar system for cheap.
ballrus_walsack t1_j2a9ni5 wrote
Reply to comment by crazydave33 in South Korea's unannounced rocket launch causes UFO scare by scot816
If you don’t know what it is, by definition it’s a UFO to you.
ballrus_walsack t1_j2a9jzv wrote
Reply to comment by Kwiatkowski in South Korea's unannounced rocket launch causes UFO scare by scot816
It’s a ufo coverup bot posting misdirection.
cratermoon t1_j2a7bqj wrote
That's sort of misleading, as China's first crewed flight was 2003, 20 years ago. The article references the 1992 adoption of a strategy. That'd be like saying the US crewed spaceflight program started July 29, 1958, at the founding of NASA, or even March 3, 1915, if you consider the founding of NACA.
[deleted] t1_j2aizut wrote
Reply to In which space simulator can I see science fiction stuff? by JediMastoras
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