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1 | | How do Jupiter’s mass and radius compare with the Earth’s? How do they compare with those of the other outer planets? |
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2 | | What are the major gaseous substances that make up Jupiter and Saturn? |
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3 | | Why are the outer planets so large? |
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4 | | What is the interior structure of Jupiter and Saturn thought to be? |
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5 | | What does Jupiter look like? |
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6 | | What is the Great Red Spot? |
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7 | | Do Jupiter and Saturn have solid surfaces? |
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8 | | What sorts of atmospheric motion and activity are observed in Jupiter? |
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9 | | What sort of activity has been seen on Io? What is Io’s heat source thought to be? |
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10 | | How do astronomers know what lies inside the outer planets? |
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11 | | What are the rings of Saturn made of? How do astronomers know this? |
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12 | | What creates the gaps between the rings? |
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13 | | How might the rings have formed? |
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14 | | What is the Roche limit? Why does such a limit exist? |
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15 | | How do Uranus and Neptune differ inside from Jupiter? |
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16 | | Why are Uranus and Neptune so blue? |
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17 | | What are the satellites of the outer planets thought to be composed of? |
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18 | | What evidence makes astronomers believe that Pluto is strongly influenced by Neptune? |
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19 | | What is unusual about Uranus’s rotation axis? What might explain this peculiarity? |
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20 | | How did the discovery of a moon orbiting Pluto help astronomers better understand this planet? |
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