Leo sees action as both Mars and Comet Schwassmann-Wachmann 1 move through; plus, spot galaxies and noctilucent clouds in the sky this week.

A man who killed nine students and a teacher at his former school in Austria and then took his own life planned the attack in ...

Jupiter joins Mercury in early twilight as Mars lingers with Leo after dark. Saturn is visible in the morning, meeting ...

Right after sunset, the largest and smallest planets are near neighbors in the sky. Jupiter, the brighter of the two, is a ...