Author Archives: Alan MacRobert

About Alan MacRobert

Sky & Telescope senior editor Alan MacRobert has been covering all aspects of astronomy since 1982.

This Week's Sky at a Glance logo

This Week’s Sky at a Glance, October 28 – November 5

Friday, October 28 • In twilight this evening, Saturn, brilliant Venus, and Antares form a nearly vertical, curving line low in the southwest — in that order top to bottom. Yesterday they formed an almost straight line. Watch their configuration change rapidly this week, as Venus speeds eastward (upper left) with respect to the other…

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…