The Universe February 2014 | Page 18

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Planetary Nebulae

Planetary Nebulae are called "planetary" because they appear like planets. They are formed when a star around the size of the sun becomes a red giant swelling and burning through its fuel, ejecting its outer layers in a gas shell. The core of the star will become a white dwarf, lighting up the gas.

4NEBULASS

A nebula is a cloud of dust and gas in space, found by the remains of dead/dying stars or where new stars are forming

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