Recent comments in /f/space
Quints_Boat t1_j28gttf wrote
Reply to comment by Omnipresent_Walrus in China reveals ambitious plans for Asia's largest optical telescope | The new telescope will have an aperture of 19.7 feet (6 meters) by 2024 while its mirror will be expanded to 26.2 feet (8 m) by 2030. by chrisdh79
Education isn't the limiting factor, it's the massive retooling and change in standards that would be needed across many industries. Not to mention also the need to then ensure interchangeable parts between measurement standards (think housing materials, for example), which could mean increased inventory which is a financial burden for companies.
Unfortunately, the impact is astronomically huge and the imperial measurement system is too ingrained for it to change and make financial sense.
robotslendahand t1_j28gfsa wrote
Reply to Documentaries on Columbia shuttle? by Worthy_Planet375
PBS's NOVA did an episode about it.
If you want something in-depth NASA's Columbia Crew Survival Investigation Report pdf gets deep into the sequence of events. Redacted in some crew-related sections btw.
Shanrunt t1_j28es8x wrote
Reply to comment by mrmaweeks in Just back from witnessing a test firing of a rocket motor that my neighbor built by goatharper
Woah... I never put that together... October Sky is just Rocket Boys scrambled...
Neat...
Omnipresent_Walrus t1_j28ehq9 wrote
Reply to comment by glaviouse in China reveals ambitious plans for Asia's largest optical telescope | The new telescope will have an aperture of 19.7 feet (6 meters) by 2024 while its mirror will be expanded to 26.2 feet (8 m) by 2030. by chrisdh79
That would require having a functional education system
[deleted] t1_j28ehlk wrote
s1ngular1ty2 t1_j28e6jb 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
Here is another good video showing what you'd see but simplified for a non-rotating black hole.
antiiltal t1_j28c97h wrote
Reply to comment by Head_Weakness8028 in If the Big Bang was the end of a previous universe, then could a strong enough telescope see into the previous universe? by [deleted]
What do you mean by the event horizon in the case of protons, electrons and neutrons?
s1ngular1ty2 t1_j28c8zw wrote
Reply to comment by LookingForDialga 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
You'd actually use a penrose diagram and plot it out on there.
[deleted] t1_j28by5b wrote
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MasterKaein t1_j28bp49 wrote
Reply to comment by d00110111010 in Black hole question by Impossible_Pop620
Hey man, time dilation can be scary!
ParanoidAutist t1_j28b9x3 wrote
Reply to Documentaries on Columbia shuttle? by Worthy_Planet375
You can get the actual mission stuff from youtube from lunarmouse i think? Just google the flight... "NASA STS-###"
LookingForDialga t1_j28azpq 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
My first guess would be that they will be able to see each other because light doesn't need to follow a radial geodesic.
The only way to make sure is to write Schwarzschild metric, find the path of the two falling observers (you can assume radial geodesic) and then find all the possible null geodesics that cross a point of the trajectory of observer 1 and see if any of them also crosses the trajectory of the other observer.
antiiltal t1_j28asd7 wrote
Reply to comment by Texan4eva in If the Big Bang was the end of a previous universe, then could a strong enough telescope see into the previous universe? by [deleted]
Remember that it wont be just milky way then, but milky way - andromeda galaxy.
mynameismy111 t1_j28al9o wrote
Reply to comment by nova9001 in China reveals ambitious plans for Asia's largest optical telescope | The new telescope will have an aperture of 19.7 feet (6 meters) by 2024 while its mirror will be expanded to 26.2 feet (8 m) by 2030. by chrisdh79
It's just the China vs the world part that felt off, the telescope is nice, but it's not a world beater
8 meters.... I mean 😂
antiiltal t1_j28aizn wrote
Reply to comment by Inevitable-Ear-3189 in If the Big Bang was the end of a previous universe, then could a strong enough telescope see into the previous universe? by [deleted]
So is there a real alternative to Penrose explanation? I guess the current scientific empirical truth is just that everything started from the big bang and nothing was before that, because before that nothing cannot be confirmed empirically or mathematically. So they just leave it be.
mynameismy111 t1_j28afir wrote
Reply to China reveals ambitious plans for Asia's largest optical telescope | The new telescope will have an aperture of 19.7 feet (6 meters) by 2024 while its mirror will be expanded to 26.2 feet (8 m) by 2030. by chrisdh79
Still want to see a 100 meter tele, the nuclear option of telescope
antiiltal t1_j289xnc wrote
Reply to comment by The-Temple-Of-Iron in If the Big Bang was the end of a previous universe, then could a strong enough telescope see into the previous universe? by [deleted]
The hypothesis that a black hole was the big bang is not really supported. And of course it is insufficiant in itself, because the black hole had to come from somewhere.
[deleted] t1_j2898do wrote
s1ngular1ty2 t1_j288swm wrote
Reply to comment by The-Temple-Of-Iron 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
There is no outside the universe. Just stop. The universe is everything that exists.
NoCellReception t1_j288p0c wrote
Reply to comment by Minimum_Box4491 in Documentaries on Columbia shuttle? by Worthy_Planet375
s1ngular1ty2 t1_j288o2v wrote
Reply to comment by triffid_hunter 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
You can 100% cross it. You only appear to stop to outside observers. You don't actually stop.
s1ngular1ty2 t1_j288lmn 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
You can't see them, no paths for light lead to them. All paths lead to the center. Light can not go from them to you or vise versa. The only light you can see is from where you came from.
You'd see something like this.
https://www.youtube.com/watch?v=HuCJ8s_xMnI
Note, all real black holes spin and drag space with them in a tremendous vortex of warped space time like you see in this video.
Also all the light you see is from the accretion disk being bent around the black hole into your eyes from all sides of the black hole. The light you see may look strange but it is accurate and from the accretion disk. You see it everywhere because of how the space is warped near the black hole. Light from all sides of the black hole can reach you because of the warped space.
Charlemagnea t1_j288ipc wrote
Reply to comment by Impossible_Pop620 in Black hole question by Impossible_Pop620
I'm sorry science doesn't love supporting your feelings over actually being right
[deleted] t1_j288h33 wrote
Reply to comment by KmartQuality in Every planet in the solar system visible in rare "planet parade" by scot816
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A_shy_neon_jaguar t1_j28h009 wrote
Reply to comment by Foreign_Astronaut in Every planet in the solar system visible in rare "planet parade" by scot816
I see you shiver with antici