Shifting
When an object is moving further away, and thus appears redder.
What is redshift?
What is hydrogen?
The stage most stars are in.
What is main sequence?
When an object is moving closer, and thus appears bluer.
What is blueshift?
What are hydrogen and helium?
What our sun will become next.
What is a red giant?
Almost every object in the universe is doing this, as proven by redshifts.
What is spreading away?
Leftover energy from the Big Bang.
What is cosmic background radiation?
One result of the death of a supermassive star; a giant explosion.
Very few objects are doing this, as evidenced by the lack of blueshifts.
What is getting closer?
What is a singularity/black hole?
The center of the universe is located here.
What is nowhere?
What our sun will become last.