What is nebula?

  • (noun): An immense cloud of gas (mainly hydrogen) and dust in interstellar space.
    See also — Additional definitions below


A nebula (from Latin: "cloud"; pl. nebulae or nebulæ, with ligature or nebulas) is an interstellar cloud of dust, hydrogen, helium and other ionized gases. Originally, nebula was a name for any extended astronomical object, including galaxies beyond the Milky Way. The Andromeda Galaxy, for instance, was referred to as the Andromeda Nebula before galaxies were discovered by Edwin Hubble. Nebulae are often star-forming regions, such as in the Eagle Nebula. This nebula is depicted in one of NASA's most famous images, the "Pillars of Creation". In these regions the formations of gas, dust, and other materials "clump" together to form larger masses, which attract further matter, and eventually will become massive enough to form stars. The remaining materials are then believed to form planets, and other planetary system objects.

Read more about Nebula.

Some articles on nebula:

List Of Awards And Nominations Received By William Gibson - Awards - Nebula Award
... The Nebula Award is an award given each year to the best science fiction or fantasy fiction published in the United States during the two previous years ... Gibson's only Nebula Award was for Neuromancer in 1985, though he has received seven other nominations ... Year Nominated work Category Result Notes 1982 Johnny Mnemonic"Johnny Mnemonic" Nebula Award for Best Short Story Nominated Originally published in 1983 ... Burning Chrome"Burning ...
Caldwell Objects - 61-70
83,000 Corvus 13 C62 NGC 247 Galaxy 6,800 Cetus 8.9 C63 NGC 7293 Helix Nebula Planetary Nebula 0.522 Aquarius 7.3 C64 NGC 2362 Open Cluster and ...
... C56, a mobile phone model Caldwell 56 (NGC 246, the Skull Nebula), a planetary nebula in the constellation Cetus and also Sickness Insurance (Sea) Convention ...
List Of Marvel Comics Characters: G - Geatar
... of the stories, Geatar spends most of his career serving the space pirate Nebula ... This relationship ends when Nebula betrays and abandons him ... Geatar briefly works for Nebula's supposed grandfather Thanos, but that ends when he is once more betrayed and abandoned ...
Notable Named Nebulae
... Ant Nebula Barnard's Loop Boomerang Nebula Cat's Eye Nebula Crab Nebula Eagle Nebula Eskimo Nebula Eta Carinae Nebula Helix Nebula Hourglass Nebula Horsehead Nebula Lagoon Nebula ...

More definitions of "nebula":

  • (noun): A medicinal liquid preparation intended for use in an atomizer.
  • (noun): Cloudiness of the urine.
  • (noun): (pathology) a faint cloudy spot on the cornea.