Question

The "classic" Big Bang theory explains that the Universe was originally very hot and very dense and that this leads to some clear predictions that have been experimentally verified.However, there were some observed properties of the Universe that the classic Big Bang theory couldn't explain. Explaining these additional properties of the Universe required the development of the model of cosmic inflation in the 1980s, which has some additional predictions we are attempting to verify with experiments today. What properties of the Universe can we explain with "classic" Big Bang theory and which do we explain by adding a very early period of cosmic inflation? Properties of Universe (6 items) (Drag and drop into the appropriate area below) existence of amount of cosmic microwave background uniformity of the the expansion ofdensity is very dark energy hydrogen versusCMB on opposite helium close to critical density the Universe parts of sky

Answer 1

Classic Big Bang theory- Existence of cosmic microwave background, amount of hydrogen vs helium, Expansion of universe.

Big Bang +Inflation-uniformity of CMB, density is very close to critical density

Neither- Dark Energy (dark energy is still unknown form of matter, which is still unexplained)

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