Since a star's light takes so long to reach us, how do we know that the star is still there?

The Farthest Star Sheds New Light on the Early Universe

When we look at the night sky, how far back in time can we see?

Answered: . what type of unconformities are…

Emerge, Return

Emerge, Return

A nearby star, Barnard's Star, has a parallax of 0.543 arcseconds. How long does it take the light from this star to reach us? - Quora

Light from stars that we see was emitted by them thousands of

Is the light we see from stars extremely old? - Quora

If The Universe Is 13.8 Billion Years Old, How Can We See 46