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1 | | What is the difference between a meteor, a meteoroid, and a meteorite? |
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2 | | How do we know what asteroids are made of? |
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3 | | Where are most asteroids found? |
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4 | | What are Apollo asteroids? |
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5 | | What shape are typical asteroids and how do we know? Why is Ceres not so shaped? |
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6 | | What do asteroids tell us about the formation of the Solar System? |
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7 | | What makes a “shooting star”? |
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8 | | How is a meteor heated? |
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9 | | What creates meteor showers? When do some occur? |
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10 | | What is the Oort cloud? What is the Kuiper belt? |
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11 | | What is the life history of a comet from the Oort cloud to an object we see? |
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12 | | What creates a comet’s tail? |
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13 | | Why are there two tails to some comets? |
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14 | | How do we know asteroids have a composition similar to that of some meteorites? |
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15 | | What evidence is there that the Earth has been hit by asteroids or comets? |
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16 | | What was the Tunguska event? |
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17 | | Why do some scientists believe that asteroids and comets play a role in mass extinctions? |
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