Recent comments in /f/space
lilrabbitfoofoo t1_j5uhdz1 wrote
Shuttle Senior QC also tried to call off the launch and were likewise overruled. I talked to one of them just hours after the disaster and they told me then that they already were sure it was the O-rings and the cold. This information would take a long time to reach the general public.
robit_lover t1_j5ufqj9 wrote
Reply to comment by akriti12_ in In 1971, three cosmonauts Dobrovolski, Volkov, and Patsayev passed away due to a valve malfunction in the Soyuz 11 capsule. They remain the only people who have passed away above the Kármán Line - the defining line of space. by sciencekenyon
A valve opened and let all the air out.
egregiouscodswallop t1_j5uffub wrote
I'm too young to remember the Challenger personally but here are two theories when it comes to making documentaries: 1) his public appearance made him seem important at the time, but he was essentially a mouthpiece for others who were more entrenched in the story and 2) the creators could be either too old or too young, either assuming everyone would already know him or that he was some irrelevant character since he never came up during interviews. Either way, sounds like he could have been cut for time. Especially if his role was mainly media based since media offer us a window to the drama and the documentarian was already backstage in the thick of it.
A_Vandalay t1_j5ub0sy wrote
Reply to comment by __WanderLust_ in Rocket Lab launches 3 satellites in first mission from U.S. soil by Robb4848
Depends what you mean by make it big. Some will likely succeed and even thrive as launch companies. However launch is a particularly difficult part of the industry to succeed in. The overwhelming majority of the revenue in space is made from providing satellite services not launching them. There is a reason SpaceX is trying to break into that market. Launch is incredibly competitive and is likely to become more so as reusable rockets increase the development required to be competitive while lowering the expected revenue per launch. All of these problems are exacerbated by the sheer number of small sat providers entering the market. There just isn’t the market demand to sustain all of these providers. 1-2 maybe but there are several dozen. And almost 10 with real hardware/potential to be operational in the next year or so. From the outside it looks like that whole segment of the industry is bubble that is about to pop, and the only ones that will survive long term will be the ones that can progress beyond small launch to the medium/heavy lift as both relativity and Rocketlab are working towards.
CollegeStation17155 t1_j5uayw7 wrote
Reply to comment by BabylonDrifter in NASA to test nuclear thermal rocket engine for the first time in 50 years | CNN by dem676
>Nuclear rockets are only deployed in trajectories that do not intersect with any planet.
unless there is a launch failure or Newton to pound thrust conversion error...
betterl8thannvr t1_j5ua9dz wrote
Reply to comment by squarek1 in Netflix Special Challenger The Final Flight - curious omission. by GhostRiders
He's dead, but also no release would be required if he was alive.
VikKarabin t1_j5u93bt wrote
Reply to comment by akriti12_ in In 1971, three cosmonauts Dobrovolski, Volkov, and Patsayev passed away due to a valve malfunction in the Soyuz 11 capsule. They remain the only people who have passed away above the Kármán Line - the defining line of space. by sciencekenyon
The capsule landed in Kazakhstan with three dead bodies in it. They were buried.
Captain_Quidnunc t1_j5u8sy2 wrote
One big problem with this.
All recently observed and verified information about black holes indicates they exist in only 2 dimensions.
[deleted] t1_j5u84gt wrote
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Radixx t1_j5u6st3 wrote
Reply to comment by 1500mgsalt in 2024 Eclipse - Best Locations by procyons2stars
We went there for the last one in 2017 and found a great spot in the Giant City state park just south of the city. Big field with unobstructed views and free! The park employees had maps and were very helpful. 10/10! We live in Dallas so staying local for the 2024 one.
damurd t1_j5u6fgd wrote
Reply to 2024 Eclipse - Best Locations by procyons2stars
I think Austin should be a pretty good bet. Very sunny here
[deleted] t1_j5u4myl wrote
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svarogteuse t1_j5u45an wrote
Reply to What would happen if you threw a frisbee in space? Would it just move in a straight line until caught? by Ok-Bug-6129
Newton's law: A body in motion stays in motion unless acted upon by on outside force.
This largely depends on where you are in space but there is always an outside force which is some body with gravity.
If you are near a significant body of some kind (moon, planet, star) the frisbee is going to be influenced by the gravity of that object. Technically its going to influenced by your own gravity but you can through it hard enough to overcome that. The frisbee is largely going to inherit your status since the energy you impart to it isn't enough to significantly change where it goes. On that large body, even an airless one its going to land maybe a long way away, but be pulled downward until it impacts because you cant toss it with enough velocity to orbit, or reach escape velocity.
If you are in orbit it will likely also remain in orbit around the same body. It retains the momentum you had plus whatever change in velocity you give it, which isn't likely enough to cause it to leave that orbit either to impact or to escape.
If you are in/near a small body like say a 1km asteroid you might be able to toss it with enough force to escape the body, but its going to go into orbit around the sun with roughly the same orbit as the body you started in/near.
If you are in deep space, lightyears from any body yes its going to go in a straight line as far as you can tell but you are likely in orbit around the center of the galaxy so it will be too. Its just going to be in a big circle one that takes 226 million years to complete.
squarek1 t1_j5u3pag wrote
Probably didn't sign a release so couldn't use his name etc. Just a guess
missbluee333 t1_j5u34zd wrote
Reply to What would happen if you threw a frisbee in space? Would it just move in a straight line until caught? by Ok-Bug-6129
space means vacuum. which means there is zero gravity. Since there is no force effecting the frisbee,it will keep on moving in a straight line
triffid_hunter t1_j5u31ax wrote
Reply to What would happen if you threw a frisbee in space? Would it just move in a straight line until caught? by Ok-Bug-6129
Depends where in space, and on your definition of a 'straight line'.
If you're in intergalactic space, yeah basically - although it would slowly get broken up by cosmic rays of various sorts.
If you're in LEO, it would end up in a very slightly different orbit to you - although in some ways an orbit is a type of straight line.
It probably wouldn't stay up there for too long, atmospheric drag would pull it down a lot faster than a human or a space station due to its higher surface area vs mass ratio - also it might get melted by sunlight.
In other areas in space, you'll have some blend of those effects (plus other smaller ones like solar wind) depending on local conditions.
FadedIntegra t1_j5u2zr7 wrote
Reply to What would happen if you threw a frisbee in space? Would it just move in a straight line until caught? by Ok-Bug-6129
In interstellar space it would go on forever until it is effected by gravity or hits something.
Nonsenseinabag t1_j5u2ory wrote
Reply to What would happen if you threw a frisbee in space? Would it just move in a straight line until caught? by Ok-Bug-6129
It would enter an orbit based on how much momentum it had. If you were able to get it to escape earth's atmosphere, it might be in orbit around Earth until it decayed from friction with the small amount of atmosphere that's up there.
If you managed to chuck it hard enough to escape Earth's gravity, then it would enter solar orbit and would have a similar orbital path as Earth and the two may eventually intercept again, and it would return to earth.
If you managed to escape solar gravity... quite a feat! And it would exit the solar system and travel until it encountered something to pull it into its gravity well.
space-ModTeam t1_j5u2lr2 wrote
Reply to What would happen if you threw a frisbee in space? Would it just move in a straight line until caught? by Ok-Bug-6129
Hello u/Ok-Bug-6129, your submission "What would happen if you threw a frisbee in space? Would it just move in a straight line until caught?" has been removed from r/space because:
- Such questions should be asked in the "All space questions" thread stickied at the top of the sub.
Please read the rules in the sidebar and check r/space for duplicate submissions before posting. If you have any questions about this removal please message the r/space moderators. Thank you.
[deleted] t1_j5u2c76 wrote
RiginalJunglist t1_j5u2blv wrote
Reply to What would happen if you threw a frisbee in space? Would it just move in a straight line until caught? by Ok-Bug-6129
Are you stood on a surface? Or just floating out there?
[deleted] t1_j5u29jc wrote
[deleted] t1_j5u1xog wrote
OptimusSublime t1_j5u1tbo wrote
Yeah I noticed that too. I wrote a very comprehensive report for my engineering degree regarding the ethics involved in that whole situation and he was the one voice that needed to be listened to the most, and the omission of his work really devalued the documentary, though it was still fascinating.
notsowisemonk t1_j5uhvps wrote
Reply to comment by FrostyAcanthocephala in About Black Holes Being Round... Maybe Not by JustAPerspective
Yes indeed, but apparently they had to write an article so might as well start speculating and shit and people will click and repost on reddit🤷