Astronomy Videos and Questions
www.pbs.org/deepspace/timeline/
Give a brief description of “what was happening” at the following times:
Time AFTER the big bang.
1. 10-35 seconds….10-6 seconds….3 seconds….10,000 years….300,000 years….300 million yearsYears BEFORE the present.
2. 5 billion years.....3.8 billion years
Below are all on YouTube. It is easier to go and just search for the video by name on YouTube than to type the URL
https://www.youtube.com/watch?v=XC1iWDz2gkk (Size of the Universe 2:11)
3. What does our Sun use for energy? What does it convert it into?
4. How many stars may be in our Milky Way galaxy?
5. How many galaxies may make up our visible universe?
http://www.youtube.com/watch?v=erH8LZhCNpM (Creation of the Universe 0:32)
http://www.youtube.com/watch?v=HEheh1BH34Q (Star Size Comparison HD 2:34)
http://www.youtube.com/watch?v=uKqvjEE0wFg (The Elements: Forged in Stars 3:42)
6. How does a star begin its life?
7. Eventually, a star runs out of hydrogen, therefore is uses helium. What elements does the star start to
make now?
http://www.youtube.com/watch?v=9BjHvwSvpOw (Zoom 100 Million Light Years from Earth 3:49)
http://www.youtube.com/watch?v=H8Jz6FU5D1A (A Star’s Life Cycle 3:11)
8.
What is the “balancing act” that goes on in a star?
https://www.youtube.com/watch?v=_NRccYV_M1c (The End of the World 3:03)
http://www.youtube.com/watch?NR=1&v=haalft-KHfM&feature=endscreen (The End Of Our Solar
System (How the Universe Works "Solar Systems" HD) 1:45))
9.
How long until our Sun runs out of fuel?
10. In the end, what will it become?
https://www.youtube.com/watch?v=zjyrIzVvckU Earth-Size Planet Orbiting Nearest Star Discovered
(2:10)
11. What evidence do we have that a planet is orbiting around Alpha Centauri B?
http://www.youtube.com/watch?v=_VEs11K0ATk&feature=related (The most gigantic stars [HD] 3:36)
https://www.youtube.com/watch?v=yESInVzFAEM (If we had No Moon - P1 10:39)
https://www.youtube.com/watch?v=RGNgdT-iWoA (If we had No Moon - P2 10:39)
12. What are three theories how the Moon was formed that are probably not correct?
13. What is the current theory that is more accepted today?