Big Bang Theory

Occurred 14 million years ago when galaxies expanded throughout the universe like raisins baked in a cake.

The portion of the electromagnetic spectrum that is visible to the human eye 400-700nm

Cosmic Microwave Background

the radiation left over from the Big Bang was detected by Penzias and Wilson in 1965. Do microwaves contain high or low energy?

There is the same ratio of what two elements throughout the universe used to support the BBT?

The change in the wavelength of light due to an object moving away from the observer.

The displacement of the spectrum to shorter wavelengths in the light coming from distant celestial objects moving toward the observer.

Cosmic Microwave Background Radiation is a form of

Hubble's observations suggested not only is everything moving away from everything else but that all matter has taken the same amount of time to get where it is today. This best explains which:

German physicist who developed the theory of relativity, which states that time, space, and mass are relative to each other and not fixed.

Research proved the universe still expanding; proved galaxies exist outside of the milky way; classification system for galaxies; hubble telescope named after him