Universe

Front

What type of galaxy is characterized by a concentrated bulge of matter in the middle and arms that spiral outward?

Back

Spiral galaxy.

Front

What type of galaxy is circular in shape and contains a massive black hole with little gas or dust?

Back

Elliptical galaxy.

Front

What is the term for the phenomenon where the pitch of a sound increases as the source approaches and decreases as it moves away?

Back

Doppler effect.

Front

What is formed right after a nebula containing gas and dust collapses in a star's life cycle?

Back

Protostar.

Front

What type of galaxy has no definite shape and contains several million stars, along with gas and dust?

Back

Irregular galaxy.

Front

What is the name of the closest galaxy to the Milky Way?

Back

Andromeda galaxy.

Front

What is the main difference between spiral and elliptical galaxies?

Back

Spiral galaxies have arms and a bulge, while elliptical galaxies are more rounded and lack structure.

Front

What is a black hole?

Back

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

Front

What is the life cycle stage of a star after a protostar?

Back

Main sequence star.

Front

What is the term for a galaxy that is smaller than a regular galaxy and has an irregular shape?

Back

Dwarf galaxy.