Astronomy Flashcards

Front

Unusual characteristics of the Sun compared to most other stars

Back

It is the only star in the galaxy.

Front

Closest star system to the Sun

Back

The Alpha Centauri system

Front

Star pointed to by the two front stars of the Big Dipper

Back

Polaris

Front

Cause of a star becoming a main sequence star

Back

The balance of pressure from fusion and gravity.

Front

Definition of a galaxy

Back

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

Front

Which of the following is NOT one of the three main types of galaxies?

Back

Rectangular

Front

What type of galaxy is the Milky Way confirmed to be as of the 1990s?

Back

Barred spiral galaxy

Front

How many major spiral arms does our galaxy have?

Back

4

Front

What type of galaxy is this?

Back

Spiral

Front

In which spiral arm of the galaxy does our Sun lie?

Back

Orion arm