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Planetary Science

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Hairy Blue Spider on Mars: What We Know and What It Is

Images circulating online sometimes describe a "hairy blue spider on Mars," usually cropped from a high-resolution NASA scene showing patterns of dark, branching channels on the...

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Venus: Facts, Orbit, and Physical Characteristics Explained

Venus is the second planet from the Sun and Earth’s closest planetary neighbor in distance and size. Often called Earth’s “sister planet,” Venus is a rocky world with a...

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Why Is Venus Called the Morning and Evening Star?

Venus is called both the Morning Star and the Evening Star because it orbits closer to the Sun than Earth does, appearing to swing back and forth around the Sun from our viewpoi...

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