1. A FEW THINGS ABOUT THE UNIVERSE STUCKENS Daniel ALLOUCHE Ashley 2014-2015

2. VISIBLE UNIVERSE IN FIGURES  One light-year : 9461 billion kilometres.  Diameter of visible universe : 100 billion light-years.  Estimated number of Galaxies (visible universe) : 350 billion.  Estimated number of small Galaxies (visible universe) : 7000 billion.  Estimated number of stars (visible universe) : 10^22. Our Galaxy, The Milky Way

3. TO GIVE YOU AN IDEA OF SCALE  http://www.dailymotion.com/video/xjzrfi_comparaison-de-la- taille-des-planetes-et-des-etoiles_tech http://www.dailymotion.com/video/xjzrfi_comparaison-de-la- taille-des-planetes-et-des-etoiles_tech  This video was published in 2011. VY Canis majoris was re- estimated and is not as much big as we thought. Is real size is little much bigger than 2/3 of is size in the video. So there are six stars a little bigger.

4. HOW OLD IS THE UNIVERSE ?  A. 8,2 billion years  B. 10,8 billion years  C. 13,7 billion years  D. 15,2 billion years

5. HOW OLD IS THE UNIVERSE ?  A. 8,2 billion years  B. 10,8 billion years  C. 13,7 billion years  D. 15,2 billion years

6. WHAT IS THE HIGHEST TEMPERATURE IN UNIVERSE ?  A. 1,1 billion degrees Celsius  B. 2,1 billion degrees Celsius  C. 3,7 billion degrees Celsius  D. 5 billion degrees Celsius

7. WHAT IS THE HIGHEST TEMPERATURE IN UNIVERSE ?  A. 1,1 billion degrees Celsius  B. 2,1 billion degrees Celsius  C. 3,7 billion degrees Celsius  D. 5 billion degrees Celsius

8. IF WE PUT THE BIGGEST STAR KNOWN NOWADAYS IN CENTER OF SOLAR SYSTEM, HOW FAR IT WILL EXTEND ?  A. Earth Orbit  B. Half of Saturn Orbit  C. Jupiter Orbit  D. Pluton Orbit

9. IF WE PUT THE BIGGEST STAR KNOWN NOWADAYS IN CENTER OF SOLAR SYSTEM, HOW FAR IT WILL EXTEND ?  A. Earth Orbit  B. Half of Saturn Orbit  C. Jupiter Orbit  D. Pluton Orbit

10. HOW LIE A KILOMETER OF SPACE PER YEAR ?  A. 1 micrometer  B. 1 millimeter  C. 1 centimeter  D. 1 meter

11. HOW LIE A KILOMETER OF SPACE PER YEAR ?  A. 1 micrometer  B. 1 millimeter  C. 1 centimeter  D. 1 meter

12. HOW BIG IS THE MILKY WAY ?  A. 10.000 light-years  B. 50.000 light-years  C. 100.000 light-years  D. 200.000 light-years

13. HOW BIG IS THE MILKY WAY ?  A. 10.000 light-years  B. 50.000 light-years  C. 100.000 light-years  D. 200.000 light-years

14. HOW FAR IS THE NEAREST GALAXY OF THE MILKY WAY, ANDROMEDA ?  A. 1,25 million light-years  B. 2,5 million light-years  C. 5 million light-years  D. 10 million light-years

15. HOW FAR IS THE NEAREST GALAXY OF THE MILKY WAY, ANDROMEDA ?  A. 1,25 million light-years  B. 2,5 million light-years  C. 5 million light-years  D. 10 million light-years

16. HOW BIG IS THE BIGGEST HEAP OF STELLAR OBJECTS ?  A. 0,7 billion light-years  B. 1,6 billion light-years  C. 2,4 billion light-years  D. 6,2 billion light-years

17. HOW BIG IS THE BIGGEST HEAP OF STELLAR OBJECTS ?  A. 0,7 billion light-years  B. 1,6 billion light-years (Composed of 73 Quasar)  C. 2,4 billion light-years  D. 6,2 billion light-years

18. HOW HEAVY IS THE BIGGER BLACK HOLE DISCOVERED NOWADAYS ?  A. 100 million times heavier than the sun mass  B. 1 billion times heavier than the sun mass  C. 8 billion times heavier than the sun mass  D. 17 billion times heavier than the sun mass

19. HOW HEAVY IS THE BIGGER BLACK HOLE DISCOVERED NOWADAYS ?  A. 100 million times heavier than the sun mass  B. 1 billion times heavier than the sun mass  C. 8 billion times heavier than the sun mass  D. 17 billion times heavier than the sun mass

20. SUBJECTS TO DEBATE : How do you feel to be so small in the universe ? Do you think we will one day understand better the universe ? For you, is it possible to find a way to go really far away in the universe ? Do you think that we can find others planets to live in ?