Stars and planetary systems

A failed star is called what?

Stars spend the majority of their life cycle as what?

What forms before a planet?

Depending on it's size, a red giant could become all of the follow EXCEPT...

What is the closest star (apart from the sun)?

Luminosity is a measure of what?

What is the spectral type of the Sun?

The most abundant element in the sun is what?

Which of these form as the beginning of a star?

What colour star is the coolest?

Which of these planets is further from the sun?

Which of these stars is the brightest?

As gravity causes dust and gas to condense...

What is the name of our galaxy?

How many Km does light travel in a second?