SUPERNOVA!!
Definition: A star that suddenly increases greatly in brightness because of a catastrophic explosion that ejects most of its mass.
Or
The explosive death of a massive star whose energy output causes its expanding gases to glow brightly for weeks or months. A supernova remnant is the glowing, expanding gaseous remains of a supernova explosion.
 |
ROMA – Una “fabbrica” di
polveri รจ stata scoperta in una supernova
dal telescopio Alma dell’Eso,
Osservatorio
Europeo Meridionale.
La supernova chiamata
|
Nova means "new" in Latin, referring to what appears to be a very bright new star shining in the celestial sphere; the prefix "super-" distinguishes supernovae from ordinary novae which are far less luminous. The word supernova was coined by Walter Baade and Fritz Zwicky in 1931.
More than five supernovas have been observed
to have occurred in our galaxy in the last thousand years, including the
"guest star" in Taurus described by Chinese astronomers in 1054;
Tycho's star in Cassiopeia, observed by Tycho Brahe in 1572; and Kepler's
supernova in 1604. In 1885 the first extragalactic supernova was discovered
telescopically in the Andromeda Galaxy
; some 700 others have been observed since. In
1987 Supernova 1987A appeared in the Large Magellanic Cloud. It was the first
supernova visible to the unaided eye since 1604, and its eruption marked the
first time that neutrinos were detected on earth from such an event (see
neutrino astronomy
Popular post: FAST FOOD IS NOT MAIN CRIMINAL FOR CHILDREN FAT
Popular post: FAST FOOD IS NOT MAIN CRIMINAL FOR CHILDREN FAT
No comments:
Post a Comment