Discover the science behind seeing your reflection in water. Light travels in straight lines and bounces off smooth surfaces, ...

A strange double object that appeared to be an exact reflection of the same galaxy and its oddball companion, which baffled scientists for years, has led to the discovery of an entirely new galaxy.

The article details various types of deep-sky objects observable by amateur astronomers, including double stars, variable stars, open and globular star clusters, emission, planetary, and reflection ...