The document discusses the origins and structure of the universe according to the Big Bang theory. It explains that the universe began in a hot, dense state around 13.8 billion years ago, and has been expanding and cooling ever since. Early on, the first subatomic particles formed, which then combined to create the first atoms like hydrogen and helium. Over time, gravity caused denser regions of gas to form, which eventually collapsed into the first stars and galaxies. Our solar system and planet Earth are located within one such galaxy.

1. The Big Bang Theory and Solar Nebula The Universe

2. Where do we live?

3. Where are we located?

5. The Solar System

6. Question?? What is a STAR?

9. What is this? What is it made of?

11. MANY STARS

12. MANY STARS SOME SUN-LIKE

14. You are here!

15. Our Galaxy from the Earth

16. Galaxies as seen with the Hubble Space Telescope

18. In the Beginning

19. All the mass and energy of the universe

20. EVERYTHING!

21. EVERYTHING! ENERGY INCREASING, BECOMING LIKE A BOMB……. STARTS EXPANDING…..

22. BOOM!

25. COSMIC ‘SOUP’

26. PROTON NEUTRON ELECTRON COSMIC ‘SOUP’

29. Universe is now a GAS

30. Universe is now a GAS HYDROGEN HELIUM

32. GRAVITY!

35. If we could view the Universe from outside, if would look like this:

36. But we are inside one of these galaxies, so all we see are the nearby stars. We can see other galaxies if we use a telescope

37. The Gemini Telescope

42. THE END