A group of students is using big bang theory to explain how the Universe formed.

Question

According to big bang theory, how did the Universe form? Move the events into order in the table.

1

2

3

4

Event

First stars form

First galaxies form

Hydrogen atoms form

Universe begins expanding

Answer 1

To organize the events according to the Big Bang Theory, the order would be:

1. Universe begins expanding
2. Hydrogen atoms form
3. First stars form
4. First galaxies form

So the finalized order in the table is:

| Order | Event | |-------|--------------------------| | 1 | Universe begins expanding | | 2 | Hydrogen atoms form | | 3 | First stars form | | 4 | First galaxies form |