Observing

Deep-Sky Objects

101 Must-See Cosmic Objects: M101

Observing

The Sky This Week: See Callisto’s shadow transit

Galaxies, Observing

101 Must-See Cosmic Objects: Maffei 1

Observing

How to see noctilucent clouds this spring and summer

Deep-Sky Objects, Galaxies

101 Must-See Cosmic Objects: The Sombrero Galaxy

Deep-Sky Objects

101 Must-See Cosmic Objects: The Horsehead Nebula

Observing

The Sky This Week: Watch the Super Flower Blood Moon Eclipse

Deep-Sky Objects

101 Must-See Cosmic Objects: Omega Centauri

Stars

101 Must-See Cosmic Objects: Mizar and Alcor

Deep-Sky Objects, Stars

101 Must-See Cosmic Objects: NGC 2516

Observing

The Sky This Week: Catch the Eta Aquariids

Deep-Sky Objects

101 Must-See Objects: NGC 3532