Components of the Universe

Front

What color are the coolest stars?

Back

Red stars are the coolest in temperature.

Front

What type of galaxy is the Milky Way?

Back

The Milky Way is a spiral galaxy.

Front

What is a light-year?

Back

A light-year is the distance that light travels in one year.

Front

What wavelengths of the electromagnetic spectrum are used to study the universe?

Back

Radio, infrared, visible light, ultraviolet, and X-rays are used to gain information about the universe.

Front

What characteristics are used to classify stars?

Back

Stars are classified by size, brightness, and temperature.

Front

What is the main component of the universe that contains stars, planets, and other celestial bodies?

Back

Galaxies are the main components of the universe that contain stars, planets, and other celestial bodies.

Front

What is the closest galaxy to the Milky Way?

Back

The Andromeda Galaxy is the closest galaxy to the Milky Way.

Front

What is a nebula?

Back

A nebula is a giant cloud of dust and gas 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 the difference between a planet and a star?

Back

A planet orbits a star and does not produce its own light, while a star generates light and heat through nuclear fusion.