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1
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The first stage in the life cycle of a star
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2
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In the end a red supergiant can become either a neutron star or...
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3
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Small pieces of rock that are pulled by Earth's gravity but burn up.
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4
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When the helium core heats so much that it starts fusing to elements other than hydrogen (the star grows large).
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5
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When a red supergiant explodes.
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6
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Groups of stars named in honor of mythological beings.
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10
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A meteor that lasts enough to hit the surface of the earth
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11
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Dust and ice combined (dirty snowballs)
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13
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Grouping of millions or billions of stars, gas and dust.
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14
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The invisible force that pulls you toward a planet or star.
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16
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A small object that orbit the earth and makes GPS work.
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