A galaxy is moving toward us. Astronomers studying the spectra would notice a shift toward the ____end of the color scpectrum.

A galaxy is moving away from us. Astronomers studying the spectra would notice a shift toward the ____end of the color scpectrum.

The types of waves that can travel through space are called ____ waves.

On the HR diagram, the trend for main sequence stars is -

The top of a wave is called the -

The distance between the crest of one wave and the crest of the next wave is called the -

Which of the following is NOT a galaxy shape?

Our star, the Sun, is a medium mass star. It will end its life as a -

A star's light takes 125 years to travel from the star to our Earth. How far away is the star?

If a star is 250 million light years away, the light we see in the sky tonight is how old?

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