Stars and Galaxies

Front

What is the unit of measurement for distances in space and to stars outside of our solar system?

Back

Light-years.

Front

What type of galaxy is characterized by an oval shape?

Back

An elliptical galaxy.

Front

What type of galaxy does not have a defined shape or form?

Back

An irregular galaxy.

Front

What is the name of the star at the center of our solar system?

Back

The Sun.

Front

What term describes the actual amount of energy a star emits?

Back

True brightness.

Front

What is the difference between apparent brightness and true brightness of a star?

Back

Apparent brightness is how bright a star appears from Earth, while true brightness is the actual energy output of the star.

Front

What is a spiral galaxy?

Back

A type of galaxy characterized by its spiral arms and a central bulge.

Front

What is the Milky Way?

Back

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

Front

What is a light-year?

Back

The distance that light travels in one year, approximately 5.88 trillion miles.

Front

What are the main components of a galaxy?

Back

Stars, gas, dust, and dark matter.