Cosmos Flashcard

Front

Why is the Sun so bright when seen from Earth?

Back

It is many thousands of times closer to Earth than other stars.

Front

What is an object orbiting the Sun, made of ice and rock, that has a tail pointing away from the Sun?

Back

A comet.

Front

What do we call everything that exists, including all matter and energy, mostly consisting of empty space?

Back

The universe.

Front

What are objects in the Universe outside of Earth's atmosphere called?

Back

Celestial bodies.

Front

What is a star and the celestial objects that orbit it?

Back

Solar System.

Front

What is the term for a large system of stars, gas, and dust held together by gravity?

Back

Galaxy.

Front

What is the name of the force that keeps planets in orbit around the Sun?

Back

Gravity.

Front

What do we call a natural satellite that orbits a planet?

Back

Moon.

Front

What is the term for a small rocky body orbiting the Sun, primarily found in the asteroid belt?

Back

Asteroid.

Front

What is the phenomenon called when a star explodes at the end of its life cycle?

Back

Supernova.