Front

A small, rocky object orbiting the sun.

Back

Asteroid

Front

A small body of ice, rock, and dust with an elliptical orbit that emits gas and dust as it nears the sun.

Back

Comet

Front

Celestial body orbiting the sun.

Back

Planet

Front

Event where one celestial body's shadow falls on another.

Back

Eclipse

Front

Body orbiting a star other than the sun.

Back

Exoplanet

Front

A planet with a massive atmosphere like Jupiter or Saturn.

Back

Gas Giant

Front

Earth's water portion.

Back

Hydrosphere

Front

A large cloud of dust and gas in space; a region where stars are born.

Back

Nebula

Front

Model for solar system formation from gas and dust.

Back

Nebular Hypothesis

Front

A celestial body orbiting the sun, round due to gravity, and has cleared its orbital neighborhood.

Back

Planet