Big Bang Review

Front

What is the Big Bang Theory?

Back

The Big Bang Theory states that all of the matter in the Universe exploded from a tiny, dense point called a singularity.

Front

What evidence supports the Big Bang Theory?

Back

Two pieces of evidence are redshift and Cosmic Microwave Background (CMB).

Front

What happens to the wavelength of light from a galaxy moving away from Earth?

Back

The wavelength of light is stretched.

Front

What does redshift indicate about a galaxy's movement?

Back

Redshift indicates that a galaxy is moving away from the observer.

Front

What is Cosmic Microwave Background (CMB)?

Back

CMB is the afterglow radiation from the Big Bang, filling the universe.

Front

What is blueshift?

Back

Blueshift occurs when an object in space is moving towards the observer, causing the light to shift to shorter wavelengths.

Front

What is a singularity in the context of the Big Bang?

Back

A singularity is a point in space where density and gravity are infinite, from which the universe expanded.

Front

How does the Doppler effect relate to the movement of stars?

Back

The Doppler effect explains how the frequency of light changes based on the relative motion of the source and observer.

Front

What is the significance of the Andromeda galaxy in relation to the Big Bang?

Back

The Andromeda galaxy is an example of a galaxy that is moving towards the Milky Way, showing blueshift.

Front

What does the term 'expansion of the universe' refer to?

Back

It refers to the observation that galaxies are moving away from each other, indicating that the universe is growing.