A 100-pound person on Earth would weigh 38 pounds on Mars.
102
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
Pluto is smaller than Russia.
9
41% of the moon is not visible from earth at any time.
103
The earth rotates more slowly on its axis in March than in September.
145
Buzz Aldrin’s mother’s maiden name was Moon.
9