Space and Astronomy Concepts

Front

What is a planet?

Back

A large round object in space that orbits a star and does not make its own light.

Front

What is a moon?

Back

A natural object that orbits a planet.

Front

What is an asteroid?

Back

A small rocky object that orbits the Sun, mostly found between Mars and Jupiter.

Front

What is a comet?

Back

A space object made of ice, dust, and rock that forms a glowing tail when near the Sun.

Front

What is a meteor?

Back

A streak of light produced when a small space rock burns up in Earth's atmosphere.

Front

What is an orbit?

Back

The path an object follows as it moves around another object in space.

Front

What is the Solar System?

Back

The Sun and all objects that move around it, including planets, moons, asteroids, and comets.

Front

What are the inner planets?

Back

The four planets closest to the Sun that are small and rocky: Mercury, Venus, Earth, and Mars.

Front

What are the outer planets?

Back

The four planets farthest from the Sun that are large and mostly made of gases: Jupiter, Saturn, Uranus, and Neptune.

Front

What is a gas giant?

Back

A very large planet made mostly of gases like hydrogen and helium.