White dwarfs form as the outer layers of a low - mass red giant
star puff out to make a planetary nebula.
Not exact matches
They found that one possibly habitable planet, Kepler - 186f, might orbit outside its
star's astrosphere, which is smaller than the one
puffed out by our sun.
As the bloated
star ages, this extended outer atmosphere cools and contracts, then soaks up more energy from the
star and again
puffs out: with each successive cycle of expansion and contraction the atmosphere
puffs out a little farther.
What could be causing the
star to
puff out dust in fits and starts?
Eventually,
Stars Aa and Ab will lose much of their current mass, from intensified stellar winds that eventually
puff out their outer gas envelopes of hydrogen and helium (and lesser amounts of higher elements such as carbon and oxygen) into interstellar space as planetary nebulae.
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