More cards in this set

What is the source of the Sun’s energy?

Where were all chemical elements with atoms heavier than helium made?

What suggests that distant galaxies are moving away from us?

What does redshift show us about the distance of a galaxy?

What does redshift suggest about space?

From oldest to youngest put in order Sun, Earth and Universe

How do scientists believe the Universe began?

What are the two possible ultimate fates of the Universe?

Why is it difficult to predict the ultimate fate of the Universe?