The planet has extreme temperature swings and perhaps active lava flows.
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The solar system's largest planet reaches peak brightness on March 8.
The spacecraft will arrive in seven months to address Mars' unsolved mysteries.
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If this giant world exists, it would be 10 times the mass of the Earth.
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The record-breaker tests what scientists know about exploding stars.
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This 6-inch telescope sets a new standard for ease of use.
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