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Astronomy

Across
Composed of rick and metal
When a Neutron star shrinks until it becomes a ....
Outer layers are much coolers than when in main sequence
Star cools and shrinks
The average distance between an object in the solar system and the sun
A piece of metal or rock that is smaller then an asteroid
Hottest part of the sun
Down
Study of the universe
Emits huge amounts of energy
Star stops glowing
A darkening of a celestial object due to the position of another celestial object
Large celestial objects that revolve around a star
Branch of science that studies object beyond the Earth
Results of a sun exploding
Keeps celestial object in proper orbits