Celestial Bodies and Their Characteristics

Front

What is a moon?

Back

A body in outer space that orbits a planet; a natural satellite.

Front

What is a star?

Back

A massive ball of gas in outer space that gives off heat, light, and other forms of radiation.

Front

What is a galaxy?

Back

A group of solar systems, dust, and gas held together by gravity; our solar system is part of the Milky Way galaxy.

Front

What is a solar system?

Back

A system of objects that revolve around a star.

Front

What is a planet?

Back

A large circular mass that revolves around a star.

Front

What do we call the sun?

Back

A star at the center of our solar system.

Front

What is an asteroid?

Back

A small rocky body that orbits the sun.

Front

What is a comet?

Back

A small icy body that, when passing close to the sun, heats up and begins to release gases, forming a tail.

Front

What is the Milky Way?

Back

The galaxy that contains our solar system.

Front

What is gravity?

Back

A force that pulls objects toward each other, keeping planets in orbit around stars.