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Red giant, then a planetary nebula, then a white dwarf.
they become a nebula
Earth's sun is currently a main sequence star which has a small mass. Eventually it will expand into Red Giant star once the core runs out of hydrogen and then helium gas. After the Red Giant phase, the star throws off its outer layers and then becomes a planetary nebula. A sun-like star will either become a white dwarf or black dwarf following the planetary nebula.
They explode as a supernova/hypernova to form a planetary nebula/black hole.
It depends on its size. Smaller stars- main-sequence, red giant, planetary nebula, white dwarf, black dwarf Bigger stars- main-squence, red giant, supernova, neutron star.
A planetary nebula consists of gas ejected from old red giant stars.
Planetary Nebula
Stellar Nebula - Average Star- Red Giant - Planetary Nebula - White Dwarf Stellar Nebula - Massive Star - Red Super Giant - Super Nova- Neutron Star Stellar Nebula - Massive star - Red Super Giant -Super Nova - Black Hole
Red giant, then a planetary nebula, then a white dwarf.
Typically it is called a planetary nebula. It has nothing to do with planets.
they become a nebula
Star of one stellar mass, red giant, white dwarf, planetary nebula
Star of one stellar mass, red giant, white dwarf, planetary nebula
Earth's sun is currently a main sequence star which has a small mass. Eventually it will expand into Red Giant star once the core runs out of hydrogen and then helium gas. After the Red Giant phase, the star throws off its outer layers and then becomes a planetary nebula. A sun-like star will either become a white dwarf or black dwarf following the planetary nebula.
A star's life cycle starts from a nebula. For giant stars, the star turns into a huge star to a super red giant to a supernova to a black hole. A sun-like star turns to a red giant, then a planetary nebula, a white dwarf, and then a black dwarf.
They explode as a supernova/hypernova to form a planetary nebula/black hole.
1. Nebula 2.Protostar 3.Main-Sequence star 4.Expanding star 5.Red giant 6.Planetary Nebula 7.White dwarf