High in the southern sky around 4 A.M. local daylight time is the stunning Swan Nebula (M17), also known as the Omega Nebula. It glides serenely through northern Sagittarius, far above the spout of ...

Skywatching summer’s celestial firmament is awe-inspiring throughout the entire season, but observing beneath August’s skies is particularly gratifying. August is when it all comes together, when the ...

A new image captured by the Hubble Space Telescope shows a spectacular nebula in all its glory. (And yes, it does kind of look like a cosmic sea slug.) Nearly 30 years ago, Hubble looked at the Trifid ...