The Blue Horsehead Nebula, a stunning reflection nebula

IC 4592 (also known as the Blue Horsehead Nebula) is a reflection nebula in the Scorpius constellation that is lit by Nu Scorpii. What is a reflection nebula? In astronomy, reflection nebulae are clouds of interstellar dust which might reflect the light of a [ … ]

IC 289, a planetary nebula discovered in 1888

IC 289 is a planetary nebula in the constellation Cassiopeia. It was discovered by Lewis Swift in early September 1888. N.J. Martin described IC 289 as “A nice, faint round planet like planetary nebula. The uniform oval disc [ … ]

The Dumbbell Nebula, a popular observing target

The Dumbbell Nebula (also known as Apple Core Nebula, Messier 27, or NGC 6853) is a planetary nebula in the constellation Vulpecula, at a distance of about 1,360 light-years.   What is the Dumbbell Nebula? The Dumbbell Nebula object was the [ … ]

The Orion Molecular Cloud Complex

The Orion Molecular Cloud Complex (or, simply, the Orion Complex) is a large group of bright nebulae, dark clouds, and young stars in the Orion constellation. The cloud is between 1 500 and 1 600 light-years [ … ]

The Sadr region which contains many dark nebulae

The Sadr region, or IC 1318, is the diffuse emission nebula surrounding Sadr or Gamma Cygni. Sadr lies in the center of Cygnus’s cross.   What is the Sadr region? The Sadr region is one of the surrounding nebulous regions; others [ … ]