MERCURY FACTS 

Mercury is the closest planet to the sun. Mercury was known since at least Sumerian times roughly 5,000 years ago. Mercury is the smallest planet. It has no moons. The mass is 3.30 x 10^23 5.5% Earth 

SIZE

1,516 miles

ORBIT

88 days

ROTATE AND ATMOSPHERIC

It takes about 59 earth days. The atmosphere is tenuous and it containes small amounts of sodium, potassium, calcium and magnesium.

TEMPERATURE AND MOONS


100 K [ -173 c; -280 F ] at night to 700 k [ 427 C 800 f ]. And no moons.

Images 

WHY

Becuse it was more easy than other planets.

SPACECRAFT

Two space craft the first was called Meriner 1. Meriner 10 was the 2. 

FUN FACTS 

Mercury is the secound densest planet after earth. The hubble space craft telescope cannot view mercury. The surface of the planet is coverd in craters. The orbital speed of mercury is 47.8 km.

SOURCES

PlanetFacts.org 

Wikipedia 

SpaceFacts

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