Tiny and close to the sun.
It is sometimes called Earth's "sister" or "twin"
The only astronomical object known to harbor life.
Is named for the Roman god of war.
It is a gas giant with a mass.
This planet sponsored by Zales.
Its name is a reference to the Greek god of the sky, Uranus (Caelus)
A planet for pirates; just narrowly made the cut when scientists decided nine planets was too many.
It is the ninth-largest and tenth-most-massive known object to directly orbit the Sun.
