AGE: At least 4.5 billion years old
SIZE: 7,926.41 miles (12,756.32 km)equatorial diameter
MASS: 6,600,000,000,000,000,000,000 short tons.
SURFACE AREA: 196,800,000 square miles (509,700,000 square km)
ATMOSPHERE COMPOSITION: Nitrogen (78%), oxygen (1%), argon (1%), with other gases making up the remainder.
CRUST COMPOSITION: Oxygen (46.6%), silicon (27.7%), aluminum (8.1%), iron (5%), calcium (3.6%), sodium (2.8%), potassium (2.6%), magnesium (2%), and other elements making up the remainder.
TEMPERATURE: Ranging from 136 degrees Fahrenheit (58 degrees Celsius) to -128.6 degrees Fahrenheit (-89.6 degrees Celsius). 57 degrees Fahrenheit (14 degrees Celsius) average
ONE DAY: 23 hours, 56 minutes, 4.09 seconds (We round this to 24 hours)
ONE YEAR: 365 days, 6 hours, 9 minutes, 9.54 seconds (We round this to 365 days)
NATURAL SATELLITES: 1
DISTINCTIVE FEATURE: (One of the) Only planet that supports life.