MERCURY By: Chastity, Serina, Alexis, Chelsea
What is the size of Mercury? Mercury has a diameter of 4, 879 km
What is the composition? sition-of-mercury/ sition-of-mercury/ Mercury doesn’t have an atmosphere but instead a thin exosphere composition of hydrogen, helium, oxygen, sodium, calcium, potassium and water vapor.
Missions Friendship7: February 20, 1962 Mercury Atlas 9: May 14, /mercury_gallery.html /mercury_gallery.html
Information Axial tilt: degrees 88 days to orbit around the sun Year=88 Earth days One solar day lasts 176 Earth days e/space/solar-system/mercury-article.html e/space/solar-system/mercury-article.html
Moons Mercury unlike other planets have no moon.
Special Features Mercury’s atmosphere doesn’t retain heat. Closest to the Sun.