Stars are glowing spheres of hot...

On a clear night, about how many stars can we see?

Which of the following is NOT a reason stars are important?

How fast does light travel?

What is a light-year?

An astronomical unit is equal to how many miles?

Most stars are made up mostly of which two gasses?

Hydrogen atoms combine to make helium in what process?

Based on size...the sun is a _________ star

Compare the star Betelgeuse and our Sun

Which type of star is about the size of Earth?

What is the smallest type of star?

What color are the hottest stars?

What color are the coldest stars?

What is the correct order of color from hottest stars to coldest?

The brightness of a star depends on all of these EXCEPT...

Apparent magnitude is what?

Absolute magnitude is what?

The H-R in the H-R diagram stands for what?

More than 90% of all stars fall into what band on the HR Diagram?

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