Space and Astronomy Terms

Front

A chunk of frozen gases, rock, ice, and dust orbiting the sun.

Back

Comet

Front

A chunk of rock or iron less than 1,000 km in diameter that orbits the sun.

Back

Asteroid

Front

The study of objects in space and their properties.

Back

Astronomy

Front

The imaginary line around which Earth rotates.

Back

Axis

Front

A nearly round body, smaller than a planet, whose orbit crosses the orbit of another body.

Back

Dwarf Planet

Front

A group of billions of stars, objects that orbit those stars, gas, and dust.

Back

Galaxy

Front

Everything that exists, including galaxies and everything in them.

Back

Universe

Front

To go around, or orbit, another object.

Back

Revolves

Front

A huge ball of hot, glowing gases in space that produces its own light and heat.

Back

Star

Front

A star and all the planets and other bodies that revolve around it.

Back

Solar System