The nebula's iconic blue hue comes from the light of star Rigel, whose intense radiation and stellar winds interact with the ...

This week’s deep-sky object is the Witch Head Nebula, also known as IC 2118, in the constellation Eridanus the River. I guess I’m running a theme this week because the Witch Head is another ...

The Iris is a reflection nebula, a cloud of gas and dust illuminated by a central star. It's six light-years across, and lies 1400 years away from the earth. The Eagle Nebula is a young open cluster ...