MILKY WAY NOTES - READING ?'s

Front

What is an astronomical unit (AU)?

Back

An astronomical unit (AU) is the average distance from the Earth to the Sun, approximately 93 million miles or 150 million kilometers.

Front

What is a light year (ly)?

Back

A light year (ly) is the distance that light travels in one year, approximately 5.88 trillion miles or 9.46 trillion kilometers.

Front

Which unit is larger, an astronomical unit (AU) or a light year (ly)?

Back

A light year is larger than an astronomical unit.

Front

How is the distance to stars typically measured?

Back

The distance to stars is typically measured in light years.

Front

What significant events occurred from 3 minutes to 20 minutes after the Big Bang?

Back

During this time, the formation of hydrogen and helium occurred.

Front

How is the Milky Way galaxy described in terms of size?

Back

The Milky Way galaxy is described as averaged-sized.

Front

What is the equivalent of 206,000 Astronomical Units in Parsecs?

Back

206,000 Astronomical Units is equivalent to 1 parsec.

Front

What is the approximate diameter of the Milky Way galaxy?

Back

The Milky Way galaxy has an approximate diameter of 100,000 light years.

Front

What are the main components of the Milky Way galaxy?

Back

The main components of the Milky Way galaxy include stars, gas, dust, and dark matter.

Front

What is the role of dark matter in the Milky Way?

Back

Dark matter is believed to make up a significant portion of the Milky Way's mass and affects its gravitational dynamics.