Journal 1
1. The universe is thought to have been created around 14 billion years ago.
2. When the young universe inflated, it became extremely bigger.
3. If the matter and antimatter had fully destroyed all of each other, the building blocks of the universe would not have been formed.
4. Particles called quarks began to form the protons and neutrons when clumped in groups of three.
5. a) The proportion of hydrogen is around 77%.
b) The reason that hydrogen is the most common element is because it can be formed easily with one proton nucleus, therefore being the simplest element in the universe.
6. A proton is in the centre of a hydrogen atom.
7. The early universe was opaque because it contained energy in the form of radiation.
8. The fog cleared as the expansion of the universe continued. This is due to the fact that more and more particles joined together and formed new elements.
9. They detected the big bang because of the radio waves that they detected. They would that no change was made and were similar in all directions. They realised that the signal was the afterglow of the big bang.
10. COBO is an acronym that stands for Cosmic Background Explorer, which is a satellite.
11. Galaxies and stars are formed when clouds of gases are compacted.
12. Baby planets become bigger when more matter is attracted.
13. There are four main theories that outline the future of our universe. They are:
- Open universe
- Closed universe
- Flat universe
- Accelerating universe
14. I believe that the ‘Accelerating universe theory’ will represent our future. This is due to the fact that recent observations and research suggest that this would most likely happen.
