M15, one of the brightest globular clusters, is high in the southeast this evening. It consists of hundreds of thousands of stars squeezed into a region of space only a few light-years across. It is an easy target for binoculars
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Last Week's Stargazing Tips
September 20: M15
September 19: Moon and Mars
Mars stands close below the Moon as darkness falls tonight. Although it has faded a good bit since its peak in July, the planet still looks like a bright orange star.
September 18: Distant Galaxy
M31, the Andromeda galaxy, is about 2.5 million light-years away, in the constellation Andromeda. Under dark skies, it is just visible as a hazy smudge of light. It is the farthest object that most people can see with their eyes alone.
September 17: Andromeda
Andromeda, the princess, is in the east and northeast as the sky gets dark on September nights. It’s not all that bright, but you can find it by looking to the lower left of the more prominent Great Square of Pegasus.
September 16: Moon and Saturn
Look for the ringed planet Saturn near the Moon the next couple of nights. It looks like a bright golden star to the left of the Moon tonight, and closer to the lower right of the Moon tomorrow night.
September 15: Moon and Antares
Antares, the bright orange heart of the scorpion, is among the biggest and heaviest stars in the galaxy. And it’s the dominant member of a vast complex of young, heavy stars. Antares stands directly below the Moon as darkness falls tonight.
September 14: Royal Bonus
Cassiopeia, the queen, glistens in the northeast at nightfall and wheels high across the north later on. The queen’s five brightest stars form the shape of the letter W.