Red giants - As they near the end of their life they will "shed" their outer layers, returning material back into the Universe as a planetary nebula.
Supernova - they seed the Universe with heavy elements - metallicity, which when formed into "newer" stars has the effect of making them "burn" slower.
Supernova are also one manner in which dust clouds get that "nudge" to start forming protostars.
Supernovas are the explosions of large stars in space.
i don't konw?
Supergiant stars of at least eight solar masses will explode as Type II supernovas.
Blue giants.
A supernova is a star saying "The End". The H-R diagram shows they different types of stars by spectral class, color, etc. It was never intended to show the ending of stars. On most H-R diagrams, you will find at the top, or occasionally top right, a place for "Supergiants". Some of those stars will eventually become supernovas. To be absolutely clear: A supernova isn't a type of star - it is the "end" of a type of star.
Stars do not create supernovas. Supernovas happen to stars. A supernova is when a star, bigger than our own sun, explodes due to the lack of gas they need.
Supernovas are the explosions of large stars in space.
Not exactly. Red giants become white dwarf stars. It is the red supergiants that can become supernovas.
binary stars are two stars that orbit each other while supernovas and novas stars are stars that explode when it runs out of fuel
No. Supernovas are cataclysmic eruptions from massive stars that have come to the end of their lives. See related questions
Supernovas. A 'shooting star' is not a star at all, it is a meteor glowing as it enters the earth's atmosphere.
yes
supernovas
They are not. A supernova is an explosion of a star. Blue stars usually end their lives in such explosions.
pulsars
main sequece
Supernovas. First generation stars only had Hydrogen to convert into Helium. There were no other elements until the first supernovas and second round of star making occurred.