THE BIG BANG THEORY
What is the Big Bang?
The Big Bang is a scientific explanation for how the universe was create (around 13.8 billion years ago).
Why is the CMB still hot?
Because of the energy still inside of it.
When did the Matter Era begin?
47,000 years ago.
Who first came up with the Big Bang theory?
Georges Lemaitre in the 1920s.
Where is the CMB located?
verywhere in the universe.
What happened after the Matter Era started?
Matter started to form.
What country was Georges Lemaitre from?
Belgium
Why do we need special equipment to see the CMB?
Because it looks like x-ray light and is invisible to the human eye.
What force pulled matter together to make galaxies and stars?
Gravity.
What name did Lemaitre give to his idea?
The “primeval atom” hypothesis.
What is the CMB?
The remnant glow of the Big Bang; light from the start of the universe.
What objects formed when gravity pulled matter together?
Galaxies, stars, and planets.
Who supported Lemaitre and helped prove the Big Bang exists?
Edwin Hubble.
what does CMB stand for? (hit it was in the title)
Cosmic Microwave Background.
What existed before everything began to expand?
A single, incredibly hot and dense point that held space, time, energy, and matter.