29 days to revolve around Earth
only planet to support life
3rd planet from the sun
no atmosphere and no life
natural satellite
a million times bigger than Earth
no real surface
source of heat and light for our solar system
medium-sized star
surface scarred and cratered
rotates on its axis every 24 hours
sphere of rock
has water and atmosphere
sphere of buring gas
rotates on an axis
4 times larger than the moon
