Outer Space Vocabulary

Front

What is the motion of one object around another called?

Back

Revolution

Front

What do we call a large spherical mass that revolves around a star?

Back

Planet

Front

What is a group of solar systems, dust, and gas held together by gravity called?

Back

Galaxy

Front

What do we call a rocky body that revolves around a planet?

Back

Moon

Front

What is the name of the galaxy our solar system is located in?

Back

Milky Way

Front

What is the term for the spinning motion of an object around its own axis?

Back

Rotation

Front

What is a smaller celestial body that orbits a planet called?

Back

Moon

Front

What is the term for a celestial body that orbits a star and is not a star itself?

Back

Planet

Front

What do we call a large collection of stars, gas, and dust in space?

Back

Galaxy

Front

What is the name of the path that a planet takes as it revolves around a star?

Back

Orbit