This Week’s Sky at a Glance, September 13 – 21

Friday, Sept. 13 • Full Harvest Moon (exact at 11:33 p.m. Eastern Daylight Time). The Moon rises in the east shortly after sunset for North America, a lovely sight as twilight descends. After dark, look upper left of the Moon for the Great Square of Pegasus balancing on one corner (outside the frame above). The Square is made of 2nd- and 3rd-magnitude stars. And then watch for 1st-magnitude Fomalhaut rising […]

The post This Week’s Sky at a Glance, September 13 – 21 appeared first on Sky & Telescope.