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.

Front

What are the three main types of galaxies?

Back

The three main types of galaxies are Spiral Galaxies, Irregular Galaxies, and Elliptical Galaxies.

Front

What is a Spiral Galaxy?

Back

A Spiral Galaxy is a type of galaxy characterized by its spiral arms that wind outward from the center, containing stars, gas, and dust.

Tags

NGSS.MS-ESS1-2

Front

What is an Elliptical Galaxy?

Back

An Elliptical Galaxy is a type of galaxy that is generally older, has an ellipsoidal shape, and contains very little gas and dust, meaning it is not forming new stars.

Front

What is an Irregular Galaxy?

Back

An Irregular Galaxy is a type of galaxy that does not have a distinct regular shape, often formed from the remnants of colliding galaxies.

Front

What type of galaxy is the Milky Way?

Back

The Milky Way is classified as a Spiral Galaxy.

Front

What is the significance of dark matter in galaxies?

Back

Dark matter is a form of matter that does not emit light or energy, and it is believed to make up a significant portion of the total mass in galaxies, influencing their structure and formation.

Front

What is the role of gravity in galaxies?

Back

Gravity is the force that holds galaxies together, keeping stars and other matter in orbit around the galaxy's center.

Tags

NGSS.HS-PS2-4

Front

What are the components of a galaxy?

Back

The main components of a galaxy include stars, stellar remnants, interstellar gas, dust, and dark matter.

Front

How do galaxies form?

Back

Galaxies are believed to form from the gravitational collapse of gas and dark matter in the early universe, leading to the creation of stars and other structures.