Galaxies

Front

What is a galaxy?

Back

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

Tags

NGSS.MS-ESS1-2

Front

How many stars can be found in a galaxy?

Back

Millions or billions.

Front

What are the three main types of galaxies?

Back

Elliptical, spiral, and irregular.

Front

What is an irregular galaxy?

Back

A type of galaxy that has no defined shape or structure.

Front

What is a spiral galaxy?

Back

A type of galaxy characterized by its spiral arms that extend from the center.

Front

What is an elliptical galaxy?

Back

A type of galaxy that is shaped like an ellipse and has a smooth, featureless light profile.

Front

What is the largest known galaxy?

Back

IC 1101, which is about 6 million light-years in diameter.

Front

What is the Milky Way?

Back

The galaxy that contains our solar system, characterized as a barred spiral galaxy.

Front

What is dark matter?

Back

A form of matter that does not emit light or energy, making it invisible, but it exerts gravitational effects on visible matter.

Front

What is the difference between a galaxy and a solar system?

Back

A galaxy is a vast collection of stars and other celestial bodies, while a solar system consists of a star and the objects that orbit it.

Tags

NGSS.MS-ESS1-2