New posts in Astronomy

Parse a variable star designation

How far is the Sun?

Is it possible to prove or disprove the Einstein Synchronization Convention with astronomy?

Why does the solar corona appear white?

What is a simple argument to prove that the stars in the sky are further away from the Earth than the Moon?

A star or a galaxy?

Finding how much time it takes for a complete Earth revolution around the Sun

Why does the shadow of Io on Jupiter look so big?

Why don't (can't) astronomers take advantage of interferometry to the extreme?

On the Rømer experiments and the speed of light