1. Mercury is the closest planet to the sun.
2. Mercury is the smallest of the eight planets. It is slightly larger than Earth's moon.
3. Mercury is the fastest planet to orbit the sun. It takes 88 Earth days for Mercury to fully orbit the sun.
4. Mercury's day is longer than it's year! Mercury rotates slowly but it's orbit is faster than the other planets which means that it's day is longer than it's year. In a day on Mercury there 1,407h, 30m and 14 seconds/176 Earth days. (Imagine waiting for a day to pass on Mercury only to find out that it has been about 2 years)
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Astronomy/space facts
No FicciónFacts about the solar system and beyond! Learn what wonders are out there far from our Earth.