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djverab [1.8K]
3 years ago
9

What is a planetary nebula?

Geography
2 answers:
krek1111 [17]3 years ago
7 0
First, what is a nebula?

A nebula is a cloud of dust or different elements (remember, the Space is to a big extent empty)

A planetary Nebula is a kind of nebula that  is specifically formed with ionized gas that was released and surrounds a red giant star.
sp2606 [1]3 years ago
6 0

First, i'll explain what nebula is.

Nebulae "plural" are huge clouds of dust and gasses in outer space. Most of the gas is made up helium and also hydrogen. Nebulae are very big and can be be many light years away.

Planetary nebula is very different from the other kinds because planetary nebula contains old stars inside it. These nebulae are made from stars that are dying out. The dying stars start changing into red giants.

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