A light-year is a measure of distance, not time.
Can a human survive long enough to travel that distance? Not by any means known.
The fastest spacecraft ever built by humans (Voyager 1) is traveling at 17.23 km/s.
Light travels at 299,792 km/s. That means that a spacecraft would take over 17 thousand years to travel one light-year.
Incidentally, the nearest star which might have planets is over 10 light-years away.
To travel a light-year in a decade would mean travelling at 1/10 the speed of light [if you disregard time needed for acceleration and deceleration. See discussion]. Current technology is nowhere near achieving this speed; while there are some speculations about future technology, for now, this is just that: speculation. It is hard to tell whether it will be possible in the foreseeable future.
587 light years is a unit of distance, not time. It represents the distance that light travels in 587 years.
Antarctica did not exist 500 billion years ago as it was part of the supercontinent Gondwana which formed much later, around 550 million years ago. The land that Antarctica currently occupies was situated closer to the equator during that time.
The star that is closest to the Sun at a distance of 4.22 light years is Proxima Centauri.
3.26 light years = 1 parsec 77.5 light years = 23.8 parsecs
6.04*102 light years
Because of the distances involved.If a star is 50,000 light years from us, we will only see it's light as it WAS 50,000 years ago. That star may no longer exist but we won't know for 50,000 years.
because million years ago there was many robot there so they made it with metals and alecticity and light
Yes. It's the nearest star system to our Solar System, at a distance of about 4.3 light-years.
The light from stars that no longer exist can still reach us due to the vast distances of space. Since light travels at a finite speed, we see these stars as they were in the past. This phenomenon allows us to observe objects in the night sky that may have ceased to exist millions of years ago.
Yes, virtual images exist where no light rays can be found.
No, it is a complete fiction, but it might (give our take, I don't know 200-300 years?) exist in the future but it would require immense technological advances, and it would be unlikely it would ever exist. At least in the form it is in the movies (i.e disk fights, light cycles, light suits, etc.)
a shadow?
light
The cosmos Kubasik galaxy does not exist in real life. It seems to be a made-up term. The distance from Earth to other galaxies can vary greatly, as galaxies are millions or billions of light-years away from us.
Darkness Shadow
Correct. No light, no color.
Light Mountain? That mountain does not exist.