Hubble further distinguished between the emission and reflection nebulae in 1922. Reflection nebula are usually blue because the scattering is more efficient...

The Iris Nebula (also known as NGC 7023 and Caldwell 4) is a bright reflection nebula in the constellation Cepheus. The designation NGC 7023 refers to...

A nebula (Latin for 'cloud, fog'; pl. nebulae or nebulas) is a distinct luminescent part of interstellar medium, which can consist of ionized, neutral...

IC 2118 (also known as Witch Head Nebula due to its shape) is an extremely faint reflection nebula believed to be an ancient supernova remnant or gas cloud...

emission nebulae and reflection nebulae. Barnard's Loop Barnard's Merope Nebula Boomerang Nebula Bubble Nebula, NGC 7635 Bubble Nebula in Barnard's Galaxy...

an emission nebula (the relatively dense, reddish-pink portion), a reflection nebula (the mainly NNE blue portion), and a dark nebula (the apparent...

The Boomerang Nebula (canonical name ) is a pulsar-wind bipolar reflection nebula located approximately 5,000 light-years from Earth in the constellation...

The Merope Nebula (also known as Tempel's Nebula and NGC 1435) is a diffuse reflection nebula in the Pleiades star cluster, surrounding the 4th magnitude...

the naked eye in the night sky. It is also observed to house the reflection nebula NGC 1432, an HII region. Around 2330 BC it marked the vernal point...

IC 4592 (also known as the Blue Horsehead Nebula) is a reflection nebula in the constellation of Scorpius that is lit by Nu Scorpii. Media related to IC...

lying 0.6° north of the Orion Nebula. The reflection nebula embedded in Sh 2-279 is popularly known as the Running Man Nebula. Sh 2-279 comprises three NGC...

the subsequent planetary nebula (PN) phase. A PPN emits strongly in infrared radiation, and is a kind of reflection nebula. It is the second-from-the-last...

The Homunculus Nebula is a bipolar emission and reflection nebula surrounding the massive star system Eta Carinae, about 7,500 light-years (2,300 parsecs)...

The Ghost Nebula (designated Sh2-136, VdB 141) is a reflection nebula located in the constellation Cepheus. It lies near the cluster NGC 7023. Looking...

The Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula in the Milky Way situated south of Orion's Belt in the constellation...

The Red Rectangle Nebula, so called because of its red color and unique rectangular shape, is a protoplanetary nebula in the Monoceros constellation....

came Signal reflection, in signal transmission Elastic scattering, a process in nuclear and particle physics Reflection nebula, a nebula that is extended...

Messier 78 or M78, also known as NGC 2068, is a reflection nebula in the constellation Orion. It was discovered by Pierre Méchain in 1780 and included...

2631 or Chamaeleon Cloud is a bright reflection nebula in the southern constellation of Chamaeleon. The nebula is lit up by a massive pre-main sequence...

The Egg Nebula (also known as RAFGL 2688 and CRL 2688) is a bipolar protoplanetary nebula approximately 3,000 light-years away from Earth. Its peculiar...

nebula makes it both an emission nebula and a reflection nebula. One hypothesis regarding their interaction is that the nebula and its illuminating star are...

The Horsehead Nebula (also known as Barnard 33 or B33) is a small dark nebula in the constellation Orion. The nebula is located just to the south of Alnitak...

VdB 1 (LBN 578, or Magakian 3) is a small reflection nebula in the constellation Cassiopeia. It lies a few arcminutes to the south-east of the bright...

Variable Nebula, only an arcminute west of T Tauri. This was the nebulosity first discovered by Hind in 1852, which is now known to be a reflection nebula due...

light. Many nebulae are made up of both reflection and emission components such as the Trifid Nebula. Emission nebula LHA 120-N 55 in the Large Magellanic...

Gyulbudaghian's Nebula (gyool-boo-DAH-ghee-an) is a reflection nebula in the northern constellation Cepheus, located about 1.5 degrees west of the much...

bright nebula with a vast hole of empty space represented by a black patch of sky, as can be seen in the photograph. It is a reflection nebula, and shines...

NGC 2071 is a reflection nebula in the constellation Orion. It was discovered on January 1, 1784, by William Herschel. It is part of a group of nebulae...

The Calabash Nebula, also known as the Rotten Egg Nebula or by its technical name OH 231.84 +4.22, is a protoplanetary nebula (PPN) 1.4 light years (13...

diffuse nebula, infrared (IR) reflection nebula, supernova remnant, molecular cloud, HII regions, photodissociation regions, and dark nebula. Distinctions...