The Big Bang

Question 1

What was the universe 14 billion years ago?

Answer 1

a tiny point, or singularity, of pure energy

Question 2

What happened to the tiny point of pure energy?

Answer 2

• Exploded outwards, expanding the fabric of space itself

Question 3

What happened at first when it exploded outwards?

Answer 3

• At first universe filled with nothing but seething energy, but as space expanded, it cooled until particles of matter could be formed from pure energy.

Question 4

What happened with further cooling?

Answer 4

particles formed atoms, mostly simple hydrogen.

Question 5

What gradually happened to the great clouds of gas?

Answer 5

condensed to form stars, clustered in huge groups, the galaxies.

Question 6

What does the universe continue to do today?

Answer 6

• The universe continues to expand today. As space expands, the distances between galaxies continue to increase. (No expansion within a galaxy as gravity holds the stars together