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2007-12-24 16:37:12 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
can anyone please explain the formation of Nova and supernova in detail.
say 2-3 points about how they are formed.
2007-12-24 16:49:16 · update #1
A nova is an explosion that occurs on the surface of a white dwarf star due to the accumulation of hydrogen gas. It is called a "nova" after the Latin for "new," because a nova appeared to be a new star in the sky; a star that had previously been too dim to be seen was now visible in the sky due to its increased brightness. A nova does not destroy a star, so it's possible for a given star to undergo multiple novae during its lifetime.
A supernova is the detonation of the core of a star. A star is normally powered by the fusion of hydrogen into helium. When the star runs out of hydrogen, it starts fusing helium into carbon, and sometimes other, heavier elements if the star is large enough. Finally, when the star has exhausted all fusable nuclei, the star collapses. This results in a final explosion during which nuclei are chaotically fused into heavier elements. Supernovae are the source of all elements heavier than nickel, because the fusion of heavier elements does not generate energy. A supernova completely destroys the star, leaving a nebula or a black hole in its place.
2007-12-24 16:41:15 · answer #1 · answered by DavidK93 7 · 1⤊ 0⤋
NOVA - Two stars in relatively close proximity to each other. One is a dwarf star, the other much larger. The dwarf start draws material away from the larger one. This material gathers on the surface of the dwarf star until a critical point is reached at which time it erupts in a violent explosion.
SUPERNOVA - A giant star with at least 1.5 times the mass of our own sun will eventually exhaust all of the fuel that sustains nuclear fusion in its core. The star cools and gravity causes a sudden implosion of the star's mass. All of the star's mass collapses onto its dense core then rebounds in an immense explosion.
2007-12-24 16:52:21 · answer #2 · answered by Chug-a-Lug 7 · 0⤊ 0⤋
hey do you know supernova there on Al Qur'an If you don't believe it you can read Al Qur'an the holy book of muslim
2007-12-24 18:43:32 · answer #3 · answered by soni s 2 · 0⤊ 0⤋
If you do some reading (astronomy.com, space.com, nasa.gov, or wikipedia) you will find a lot of information on both forms of stellar explosions.
2007-12-24 16:46:07 · answer #4 · answered by Anonymous · 0⤊ 0⤋