Solar System

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

The study of objects in space and their properties.

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

Everything that exists, including galaxies and everything in them.

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

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

An object moves in a circle around an axis or center.  The cause of day and night on Earth.

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

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

The curved path of an object around a point in space.

A large, round body that revolves around a star.