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Galaxies: Immense Star Islands
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5.8 |
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Gas Giants: Huge Far Off Worlds
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5.5 |
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Hot Planets: Mercury and Venus
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5.9 |
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Ice Dwarfs: Pluto and Beyond
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5.8 |
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Mars: Distant red planet
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5.9 |
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Mighty Megaplanets: Jupiter and Saturn
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5.8 |
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Space Probes: Exploring Beyond Earth
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6.1 |
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Star Spotters: Telescopes and Observatories
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6.2 |
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The Earth: Our home planet
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5.7 |
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The Moon: Earth's Neighbor
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5.5 |
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The Stars: Glowing Spheres in the Sky
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5.4 |
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The Sun: Our local star
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5.7 |
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Canada
USA
