How Large is the Universe Documentary - Space Science
If you've ever dreamed of time traveling, just look out at the night sky; the glimmers you see are really snapshots of the distant past. That's because those stars, planets and galaxies are so far away that the light from even the closest ones can take tens of thousands of years to reach Earth.
The universe is undoubtedly a big place. But just how big is it?
"That may be something that we actually never know," Sarah Gallagher, an astrophysicist at Western University in Ontario, Canada, told Live Science. The size of the universe is one of the fundamental questions of astrophysics. It also might be impossible to answer. But that doesn't stop scientists from trying.
Видео How Large is the Universe Documentary - Space Science канала Space & The Universe HD
The universe is undoubtedly a big place. But just how big is it?
"That may be something that we actually never know," Sarah Gallagher, an astrophysicist at Western University in Ontario, Canada, told Live Science. The size of the universe is one of the fundamental questions of astrophysics. It also might be impossible to answer. But that doesn't stop scientists from trying.
Видео How Large is the Universe Documentary - Space Science канала Space & The Universe HD
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