1. ASTRONOMY

2. The Big Bang Theory

3. The Big Bang Theory

4. Red shift
Spectrum<
Edwin Hubble

5. “Galaxies are moving away from us and from each other”
Red shift
Edwin Hubble
“Galaxies are moving away from us and from each other”
E. Hubble 1929

6. The Universe is expanding
Our Universe was the size of an atom…
…then, 14 billion years ago, it started to expand…

7. …it all started with the BIG BANG…
Protons and neutrons
Stars and galaxies
Sun and Solar system
Elements
14 BILLION YEARS AGO Time: 0 seconds
1/ seconds
180 seconds
10 billion years
2-3 billion years

9. Future of our Universe  Gravity is opposing to the
expansion of the Universe
3 scenarios
(depending on the Density of the Universe):

10. Future of our Universe BIG CRUNCH THEORY
The Universe will stop expanding and start collapsing…until it again occupies a single hot and dense spot.

11. Future of our Universe BIG RIP THEORY
The Universe will start expanding even faster, and the space itself will be ripped apart.

12. The Universe will expand more slowly, becoming colder and darker.
Future of our Universe
BIG FREEZE THEORY
The Universe will expand more slowly, becoming colder and darker.

13. Future of our Universe
Big Crunch
Big Freeze
Big Rip

14. Future of our Universe