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

What is a light year? Why you might not be seeing stars in real time.

How close is the nearest black hole to Earth? - Big Think

Why Is Physics Scale Invariant? - Ask an Astronomer

Why do some stars and pictures have different points of light than others? Like some will have eight points of life for others will have 12, does that determine the star size?

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

Observations of Distant Galaxies

Imagine the Universe!

Earendel, the Most Distant Known Star, Reveals Its Secrets to JWST

Why Looking At The Stars Is A Look Back In Time