A nova is a star which has a close companion star, and draws stellar material off of it's companion, occasionally flaring up very brightly in the process. A supernova is a massive and hot star to begin with, that tends to go through it's life cycle at high speed, and ending it's life in a cataclysmic explosion. Supernova remnants then collapse into a neutron star - a spinning, very hot pile of stellar ash, so dense that a teaspoonful of it would weigh thousands of tons. If the collapsed supernova star was big enough, it's gravity upon collapse is so intense than not even light can escape from it, and it becomes what is called a "Black Hole".
The process of the stellar explosion is called a "nova", or if powerful enough, a "supernova". The outer layers of gas are blown away into space, and this shell of fleeing gas is sometimes called a "supernova remnant", or more generally, a "nebula". For example, the Crab Nebula is the gas cloud left over after a supernova explosion which was brilliantly visible here on Earth in the year 1054.
Nova (plural novae) means "new" in Latin, The prefix "super-" distinguishes supernova from ordinary nova.
A supernova, or in the case of a smaller star, a nova.
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A Nova [See Link] is a fusion reaction in the accretion layer (the superficial shell) of a white dwarf star, which is slowly stealing material from a companion in a binary system. In the case of an instability in the accretion disk itself, the event is called a dwarf nova.This can occur once or many times. RS Ophiuchi has erupted in 1898, 1933, 1958, 1967, 1985, and 2006. It is in it's "quiet" phase at the moment, but will more than likely erupt again in the future.If a nova accretes enough mass to pass the Chandrasekhar limit then the whole star will explode as a type I-a supernova.A Supernova [See Link] is the catastrophic destructive event caused by the core collapse of a large star.---The term "nova" is generically applied to exploding stars, but is more technically a flare-up of fusion activity on the outer surface of a white dwarf star. A "supernova" is a more extreme version involving the gravitational collapse of a very large star. In this process, the outer layers fall in on the star's core, then are violently blasted away.A supernova is therefore the "death" of a star, as fusion will normally end afterward, leaving a neutron star or black hole. The explosion also creates a nebula of illuminated gas that is one of the most visible of all celestial phenomena.The supernova process is caused by the exhaustion of nuclear "fuel" (lighter elements) within the star, so that the reactions are no longer able to resist the gravity trying to compress the solar mass into the core. The star collapses, causing the outer layers to violently explode outward as gases and dust. The remnant core may become a super- compressed neutron star or possibly a black hole.(For details on "nova", see related questions and link.)(For details on "supernova remains" see related question and link.)
A supernova is when a massive star explodes. A neutron star is what can be formed after a supernova explosion. See related questions
Nuclear fusion stops and the star is no longer capable of transformming LIGHTER elements into HEAVIER. elements. At this point GRAVITY looses out and PRESSURE wins out thereby causing the supernova explosion. But bear in mind, there is a HUGE difference between an ordinary star going NOVA and a SUPERNOVA.
super nova
A nebula contains stars and other matter; a supernova is just a large enough nova, or star that explodes at the end of its life cycle due to spent fuel
Supernova
A nova or a supernova
A super nova isn't a person. A super-nova is a high mass star's explosion.
The process of the stellar explosion is called a "nova", or if powerful enough, a "supernova". The outer layers of gas are blown away into space, and this shell of fleeing gas is sometimes called a "supernova remnant", or more generally, a "nebula". For example, the Crab Nebula is the gas cloud left over after a supernova explosion which was brilliantly visible here on Earth in the year 1054.
Nova (plural novae) means "new" in Latin, The prefix "super-" distinguishes supernova from ordinary nova.
A supernova, or in the case of a smaller star, a nova.
About 20 years.
well what you gotta do is go home a smoke weed