Solar System Flashcards
Nebula
A large cloud of gas and dust in interstellar space; a region in space where stars are born or where stars explode at the end of their lives
Solar Nebula
The Nebula that formed our solar system
Nuclear Fusion
The combination of the nuclei of small atoms to form a larger nucleus; releases energy
Sunspot
a spot on the sun that is darker than the rest
Astronomical Unit
the average distance between the earth and the sun
Terrestrial Planets
one of the highly dense planets nearest to the sun
Pro-grade Rotation
Counterclockwise spin from the north pole
Retrograde Rotation
Clockwise spin from the south pole
Gas Giant
A big giant planet made of gas
Satellite
a thingy that revolves around the earth
Phase
A stage in somethings life
Eclipse
when the moon covers the sun
Comet
The thing that flies through the sky
Asteroid
A rock floating through space
Asteroid Belt
A group of asteroids
