Stars and Galaxies

Front

What is the main reason stars appear to be close together in outer space?

Back

Stars are actually very far apart from each other in the vastness of space.

Front

What color of stars is typically the brightest according to the Hertzsprung-Russell Diagram?

Back

Blue stars are the brightest.

Front

What is a light-year?

Back

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

Front

Which is the largest: molecule, moon, universe, or galaxy?

Back

The universe is the largest.

Front

What type of explosion is thought to create black holes?

Back

Black holes are thought to be remnants of a supernova explosion.

Front

What is a galaxy?

Back

A galaxy is a massive system of stars, stellar remnants, interstellar gas, dust, and dark matter, bound together by gravity.

Front

What is the Milky Way?

Back

The Milky Way is the galaxy that contains our Solar System.

Front

What is a supernova?

Back

A supernova is a powerful and luminous explosion of a star, marking the end of its life cycle.

Front

What is the difference between a star and a planet?

Back

A star is a massive celestial body that produces light and heat through nuclear fusion, while a planet is a celestial body that orbits a star and does not produce its own light.

Front

What is a black hole?

Back

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