Speed of the light...

[Francesco Panetta]

With this simulator I realized that the speed of the light is extremely slow, I thought it was faster ... unbelievable!

[Althar]

Yeah... it is both amazing and depressing at the same time... and to think that as the universe continues to expand we get to see less and less of it.

[Francesco Panetta]

That's right ... it means that even if in the future we will invent motors with which we can go at speeds close to the speed of light, we will never be able to travel among the stars.

[Demiurge]

Originally posted by Francesco Panetta:

That's right ... it means that even if in the future we will invent motors with which we can go at speeds close to the speed of light, we will never be able to travel among the stars.

unless we make use of technology that can bypass the light limit like warp or folding space.

[AJ, Lord of Chaos]

Eight minutes from earth to sun. It's also the maximum speed for things to be causally connected in this world which is weird to think about.
And travelling near lightspeed there's this often overlooked feature of everyone else aging really fast so that's a downer.

[Demiurge]

Originally posted by AJ, Lord of Chaos:

Eight minutes from earth to sun. It's also the maximum speed for things to be causally connected in this world which is weird to think about.
And travelling near lightspeed there's this often overlooked feature of everyone else aging really fast so that's a downer.

from your point of view yes, but from theirs you aren't aging at all. it's all relative. (yes i made a pun, deal with it lol)

[Teterrimo]

For people in a ship that is always reaching the speed of the light and constantly accelerating, it would be possible to travel in the universe in something like 30 years, but after they do travel and arrive for instance at the "edge" of the universe and then return, the earth won't exist anymore, because for people on the earth that ship travelled for billions of years at the speed of the light! Is called the dilation of the time

If someone is interested

https://spacetravel.simhub.online/

[BucadoX]

Thats one of the best physical facts Space Engine demonstrates. It so incredible difficult to imagine the vastness of space, travelling at light speed through your galaxy and see NOTHING changing is mind blowing. Thank you for this insane eye opener!

[Francesco Panetta]

Yes... traveling at 60% of speedlight we could reach proxima centauri (4ly) in about 3 years from our point of view of the time/space.

[VoidEngineer]

Originally posted by Francesco Panetta:

Yes... traveling at 60% of speedlight we could reach proxima centauri (4ly) in about 3 years from our point of view of the time/space.

6.7 years, actually. You'd need to go faster than light to go 4 light years in less than 4 years.

[Francesco Panetta]

Originally posted by Skjarl:

Originally posted by Francesco Panetta:

Yes... traveling at 60% of speedlight we could reach proxima centauri (4ly) in about 3 years from our point of view of the time/space.

6.7 years, actually. You'd need to go faster than light to go 4 light years in less than 4 years.

From the point of view of the earth yes 6,7 years but from the point of view of the traveler you need less and about 3 years. This is the relativity my friend.

[VoidEngineer]

Originally posted by Francesco Panetta:

Originally posted by Skjarl:

6.7 years, actually. You'd need to go faster than light to go 4 light years in less than 4 years.

From the point of view of the earth yes 6,7 years but from the point of view of the traveler you need less and about 3 years. This is the relativity my friend.

Yeah, I know how time dilation works. Your wording was a bit ambiguous, hence my statement. 6.7 years from Earth, 3.75 years for the traveler.

[commissaire lachance🇫🇷]

Originally posted by Francesco Panetta:

That's right ... it means that even if in the future we will invent motors with which we can go at speeds close to the speed of light, we will never be able to travel among the stars.

the duration of an interstellar journey at 0.99 C would be accaptable to the scale of a human life but would still be counted in years (from an external point of view)