The sky is always changing. Planets dance in the evening, stars explode as supernovae, and new comets grace dawn skies. Here we bring together all the astronomy tips and resources you’ll need to observe the glories that light up the heavens.

Sky at a Glance – Our most popular column. Find out what’s up in the sky tonight!
Sky Tour Podcasts – Discover your night sky in a guided monthly tour led by J. Kelly Beatty
Interactive Observing Tools – Plan your observing tonight with our sky chart and other tools
Celestial Objects to Observe – A treasure chest of observing advice categorized by object type
Astronomy and Stargazing Projects – Find blueprints for observing projects

This Week's Sky at a Glance logo

This Week’s Sky at a Glance, September 16 – 24

Friday, September 16 • Full Moon (exact at 3:05 p.m. Eastern Daylight Time). As night comes on, look for the Great Square of Pegasus to the Moon's upper left. The Square, a little larger than your fist held at arm's length, stands on one corner. • A fairly deep penumbral (fringe) eclipse of the Moon…