New posts in Astronomy

How are coherent astronomical objects imaged?

What is the farthest planetary body or star system object we have observed using visual light?

How can we see planets thousands of light years away but don't know if there are more planets in the solar system?

Why are there no stars visible in this photograph?

Are Hubble Telescope Images in true color?

Do stars produce spatially coherent light? Why?

What is the precise definition of “cadence” in astronomy?

Detectability of interstellar messages

Of the 9096 visible stars -- 90% are how close?

What is the area of the sky that is covered by the Hubble Ultra Deep Field image?