A large and bright nebula, 1350 l.y. away in the constellation Orion; also known as M42 or NGC 1976. The nebula covers more than 1° × 1° of sky and is faintly visible to the naked eye as a fuzzy patch around the multiple star Theta1 Orionis, also known as the Trapezium. The ultraviolet light from the Trapezium stars, particularly Theta1 C (spectral type O6), ionizes the nebula. The Orion Nebula is over 20 l.y. in diameter, and contains several hundred solar masses of ionized gas. It forms a hot blister on the near side of one of the massive Orion Molecular Clouds.
http://hubblesite.org/image/1826/news_release/2006-01
- CONLAN
- connate water
- connect
- connected
- connected component
- connected graph
- connectedness
- connected(of a relation)
- connected(of a space)
- connected sum
- connection hijacking
- connectionism
- connectionless-mode network service
- connectionless protocol
- Connection Machine
- connection-oriented
- connection-oriented network service
- connection-oriented service
- connection table
- connective
- connective tissue
- connectivity
- connectivity matrix
- connect time
- connexive logic