Green arc floats above the Andromeda Galaxy

Milky Way

Amateur Astronomers Find Glowing Gas Arc Near Andromeda

An arc that glows green thanks to doubly ionized oxygen appears near the Andromeda Galaxy in a photo obtained by amateur astronomers.

Celestial Objects to Observe

Easy-to-find Deep-sky Objects for Cold Nights

Cold weather keeping you inside at night? Limit your time outdoors and make the most of your telescope time with these easy-to-find deep-sky gems.

Celestial News & Events

The Case of the Vanishing Nebula

Now you see it, now you don't. McNeil's Nebula in Orion has disappeared, thanks to a drastic reduction in brightness from the protostar that usually provides illumination. 

Deep Sky

See the Celestial Birds of the Milky Way

Summer is perfect for bird-watching whether that be in the trees or among the stars of the Milky Way. We explore the celestial birds of the season.

Haunted Skies

Explore the Night with Bob King

Spooky Nebulae for Halloween Nights

While the kids are gathering sweet treats this Halloween, get a celestial scare with these frightful deep-sky sights.

Stellar Science

A New Look at the Crab Nebula

A new Hubble Space Telescope image shows the very heart of the Crab Nebula, one of the most studied supernova remnants.

Natural Artistry

Astronomy and Stargazing Projects

Hunting Giant Planetary Nebulae

Mind your elders the next clear night and pay a visit to some of Spring's biggest and most ancient planetary nebulae.

Celestial Objects to Observe

Observing the Great Orion Nebula

This star-studded pool of misty light provides a feast for observers.

Celestial Objects to Observe

Observing Amazing Nebulae Season by Season

Nebulae are among the most beautiful sights in the night sky but their diffuse nature can make them challenging to locate. Here are a few interesting nebulae, and most are easy to spot.