Science- Space Vocab

A chunk of frozen gases, rock, and dust that revolve around the sun.

• comet

• rotate

• stars

• asteroid

The path of one object in space around another object

• comet

• dwarf planet

• orbit

• revolve

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

• axis

• dwarf planet

• stars

• solar system

To spin on an axis.

• rotate

• revolve

• stars

• astronomy

A chunk of rock or iron less than 1000 km (621 mi) in diameter that revolves around the sun.

• asteroid

• comet

• planet

• star

To go around another object.

• revolve

• galaxy

• planet

• rotate

A group containing billions of stars, objects that revolve around those stars, gas, and dust.

• astronomy

• dwarf planet

• galaxy

• stars

The imaginary line around which Earth rotates.

• axis

• revolve

• dwarf planet

• orbit

Huge balls of very hot, glowing gases in space that produce their own light and heat.

• stars

• comets

• asteroid

• planet

A large, round body that revolves around a star in a clear orbit.

• stars

• solar system

• planet

• rotate