Stars, Galaxies, and the Universe

Front

What is an elliptical galaxy?

Back

An elliptical galaxy is a type of galaxy that looks like a round or flattened ball, with stars that are mostly older and less active than those in spiral galaxies.

Front

True or False: The coolest stars are blue in color.

Back

False. The coolest stars are red in color.

Front

What are patterns of stars in the sky called?

Back

Patterns of stars in the sky are called constellations.

Front

What is a galaxy?

Back

A galaxy is a huge group of solar systems, dust, and gas held together by gravity.

Front

What does a light year measure?

Back

A light year measures distance, specifically the distance that light travels in one year.

Front

What is a spiral galaxy?

Back

A spiral galaxy is a type of galaxy characterized by its spiral arms that wind outward from the center, containing younger stars and more gas and dust.

Front

What is a nebula?

Back

A nebula is a large cloud of gas and dust in space, often the birthplace of stars.

Front

What is a black hole?

Back

A black hole is a region in space where the gravitational pull is so strong that nothing, not even light, can escape from it.

Front

What is a star system?

Back

A star system is a group of stars that are gravitationally bound to each other, often including planets and other celestial bodies.

Front

What is the difference between a comet and an asteroid?

Back

A comet is a small icy body that, when close to the sun, displays a visible atmosphere or coma and sometimes a tail, while an asteroid is a rocky body that orbits the sun.