1
The term "cosmic background radiation" refers to this kind of wave, which fills the "empty" areas of space.
2
This synonym for size is directly proportional to a star's period of brightness.
3
Knowing the magnitude of a star allows us to calculate its ________ from us.
4
_________ state theory was disproved by the discovery of cosmic background radiation, proving that the universe was changing over time.
5
Hubble's law says that the farther apart object in space are, the _______ they are moving away from each other.
6
A ______ is a supermassive black hole found 10-15 billion light years away from Earth.
7
This person's law states that the universe is expanding.
8
300,000 km/s is the speed of ______.
9
The ___ shift can tell us how quickly objects are moving away from us.
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