7: Mercury 101
Mercury is the smallest planet in the solar system. It is the fastest planet in the solar system too.
Location: 1st planet in the solar system.
Planet type: It is a terrestrial planet.
Moons: It has no moons.
Surface: Solid and cratered
Size: Slightly larger than Earth's moon. It has a radius of 2,440 kilometers.
Evidence of life: There is no evidence of life on mercury till now.
Climate: Mercury's surface temperatures can get extremely hot and cold at day and night.
Temperatures can be as high as 430°C. Mercury does not have an atmosphere to retain that heat at night so temperatures come out to be -180°C.
Orbit shape: Mercury has an eccentric, egg-shaped orbit.
Fun Fact: Only 2 spacecraft have visited mercury till now: Mariner 10 and MESSENGER.
Coming up next: Venus 101
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