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The Swiftest Planet
Sun-scorched Mercury is only slightly larger than Earth's moon. Like the moon, Mercury has very little atmosphere to stop impacts, and it is covered with craters. Mercury's dayside is super-heated by the sun, but at night temperatures drop hundreds of degrees below freezing. Ice may even exist in craters. Mercury's egg-shaped orbit takes it around the sun every 88 days.

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  Explore Mercury in 3D Activities

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The Transit of Mercury
Grade Level: 6-8
Lesson Time: Less Than 30 Minutes
Solar System Body: Sun, Mercury, Earth
Mission: Earth Science (Earth), Heliophysics (Sun), Mariner 10 (Mercury), MESSENGER (Mercury)

Short Description: As seen from Earth, the planet Mercury occasionally passes across the face of the sun; an event that astronomers call a transit. From images taken by the Hinode satellite, students will create a model of the solar disk to the same scale as the image, and calculate the distance to the sun.

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The Transit of Mercury
Grade Level: 6-8
Lesson Time: Less Than 30 Minutes
Solar System Body: Sun, Mercury, Earth
Mission: Earth Science (Earth), Heliophysics (Sun), Mariner 10 (Mercury), MESSENGER (Mercury)

Short Description: As seen from Earth, the planet Mercury occasionally passes across the face of the sun; an event that astronomers call a transit. From images taken by the Hinode satellite, students will create a model of the solar disk to the same scale as the image, and calculate the distance to the sun.

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