Supernovae are massive explosions that occur when a star uses up its gas and explodes so they will only occur once a star has died.
"Supernovae" is a plural form of "supernova"
It is precisely the supernovae that created those elements and dispersed them into space.It is precisely the supernovae that created those elements and dispersed them into space.It is precisely the supernovae that created those elements and dispersed them into space.It is precisely the supernovae that created those elements and dispersed them into space.
supernovae are classified by the lines in their spectra (which indicate which elements are present). type I supernovae have no hydrogen lines, having been caused by the explosion of a star with no hydrogen envelope. type II supernovae have hydrogen lines, indicating that the exploding progenitor star had retained a significant amount of its hydrogen before its supernova. type I supernovae are further classified based on the presence of silicon lines, which are present in type Ia supernovae but not types Ib and Ic.
Black holes do not create supernovae. Black holes are created from a supernovae.
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supernovae
"explode as supernovae". These are called Type II supernovae and sometimes a neutron star is formed, not a black hole.
Where: In supernovae. How: by nuclear fusion.
They were formed in supernovae.
Supernovae are classified as Type I or Type II depending upon the shape of their radioactive decay of the unstable heavy elements produced in the explosion.
B.W Rust has written: 'The use of supernovae light curves for testing the expansion hypothesis and other cosmological relations' -- subject(s): Supernovae
It is precisely the supernovae that created those elements and dispersed them into space.It is precisely the supernovae that created those elements and dispersed them into space.It is precisely the supernovae that created those elements and dispersed them into space.It is precisely the supernovae that created those elements and dispersed them into space.