Stars form from massive clouds of gas and dust.
How massive are newborn stars?
They can be gigantic, the largest discovered protostar is about 300 times the size of our Solar System.
What are the life stages of a low-mass star?
gas and dust, main sequence,red giant, planetary nebula, white dwarf or supernova.
How does a low-mass star die?
by supernova or white dwarf.
Do stars produce calcium?
Yes.
Have we seen stars being born?
kind of, there are pictures of stellar nurseries.
What is a planetary nebula?
A ring-shaped nebula formed by an expanding shell of gas around an aging star.
Are new stars being born in the Orion nebula?
Yes.
What is the mass range of most stars?
0.1 to 20 solar masses.
How does the law of angular momentum apply to star formation?
Stars form by collecting dust and gas, as they condense they spin very fast and keep their angular momentum throughout their life.
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