National Geographic

Read the text below before you watch the documentary. Then listen and fill in the number gaps . Note this is not a complete transcript of it.

1. The heat in a protostart was at first due to 1.
2. Hydrogen atoms fuse together to produce 2 atoms.
3. Sun light will keep on shinning for 3 years.
4. It is a vast nuclear 4 nearly a million miles across.
5. From our distance this process seems almost 5.
6. We have a pretty 6 origin.
7. Recent research shows that our solar system birth was 7 from peaceful.
8. Our sun might have been born in one of the most violent events in the 8.
9. No one knows what 9 the Big Bang
10. It seems that there was an explosion so 10 that it created an entire universe.
11. We think that the Big Bang created time, 11, and all the matter in universe.
12. We are made up of 12 and hydrogen but planets are made up of iron and 13.
13. Here on Earth we have learnt to create new elements throughout 14 technology.
14. The energy of a 15 explosion is the same as the energy the sun has put up in its 10-billion-year 16.