justin

1. The old universe is thought to be known as the big bang theory where the universe exploded from all directions from a single point called a singularity.

2. 14 billion years after the big bang is the time when our solar system was created.

3. Because if there was no more matter left the universe could not be created as it was the building blocks for the universe.

4. Quarks bunched into groups of three to create protons and neutrons.

5. a) 77% hydrogen

b) Cause there are many forms of hydrogen and it is the simplest form.

6.  A proton is what is in the nucleus of the hydrogen.

7. Because there was a lot of energy in the form of radiation such as x-rays and light.

8. About 300 000 years after the big bang the universe continued to expand however, the temperature dropped to 3000 degrees celcius there for electrons started reducing speed as a result of hydrogen and helium nuclei to form new types of atoms or elements. As more and more particles combined to form new elements the fog cleared.

9. They collected background radiation left over from the very beginning of the universe.

10. Cosmic Background Explorer.

11. Galaxies and stars are formed from clouds of gas about a billion years after the big bang which are made of helium and hydrogen.

12. Baby planets become larger by attracting matter which increases the size.

13. OPEN UNIVERSE, CLOSED UNIVERSE, FLAT UNIVERSE and ACCELERATING UNIVERSE.

14. I think the Flat universe is most correct.