Planet Mercury
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Mercury is the closest planet to the sun and has thousands of huge craters from meteoroid and comet impacts. It rotates very slowly, resulting in a unusual sense of time. While astronomers previously believed Mercury's poles contained water ice, the MESSENGER spacecraft confirmed in 2011 there was no ice after sending back many pictures from its flybys of the planet.
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Planet Mercury
- 1. Mercury
- 2. The Planet Itself Closest to the sun, though not the hottest, Mercury is quite a different planet from most.
- 6. Craters and Mountains Mercury is an easy target for meteoroids and comets to crash onto, hence it has thousands of huge craters.
- 10. Talking Time Since mercury rotates very slowly, time on Mercury is “just a little bit twisted.”
- 11. What Astronomers Thought Astronomers believed that on the poles of Mercury there was water ice due to comets.
- 12. Missions to Mercury Before 2011, only one space craft - Mariner 10- had ever visited Mercury.
- 13. MESSENGER to Mercury InMarch 2011, MESSENGER was sent to Mercury, many days sending back pictures.