Formation of Galaxies Vocab '25

Front

Tiny particles of matter floating in space; condense under gravity to form stars and planets.

Back

Dust

Front

A theory that says the universe began as a small point that expanded rapidly about 13.7 billion years ago.

Back

Big Bang Theory

Front

The distance light travels in 1 year.

Back

Light Year

Front

The force that causes objects with mass to attract one another.

Back

Gravity

Front

A large group of stars in space.

Back

Galaxy

Front

The process by which stars are formed from dust and gas in space.

Back

Star Formation

Front

A collection of stars, gas, and dust bound together by gravity.

Back

Galaxy

Front

The observable universe is estimated to be about how many billion years old?

Back

13.7 billion years

Front

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

Back

Gravity

Front

What is the term for a system of stars, planets, and other celestial bodies orbiting a star?

Back

Solar System