Download Video. Hunting the Edge of Space. NOVA - d

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Video Guide: Telescopes: Hunting the Edge of Space: NOVA
The questions are in order. Answer them as the show plays.
1. What is the name of the galaxy we live in? _____________________
2. What tools are scientists using to expand our view of the cosmos? ________________________________
3. Far beyond our solar system, we are now discovering
orbiting other suns.
4. The revolution starts in the early 1900’s. A brand new telescope was being built. That telescope is one
of the most important in the history of astronomy. Where was it built? (READ CAPTION!!)
5.Why did George Hale build the observatory?
6. Why did Hale want to use the curved metal mirror instead of the lenses on his telescope?
7. Which nebula did Hubble focus on?
8. Stars, like car headlights, appear brighter as they get closer. If you know the
you can calculate the distance.
9. How far away is Andromeda? Why is this distance important?
10. What did Hubble discover about dozens of other nebulae?
11. We have uncovered
billion galaxies beyond our home, each made up of
billion stars. Multiply those together and you have more stars than all the grains of sand on all
the beaches and deserts of Earth.
12. Light is made up of
and each color has its own
.
wavelength, red light has a
. Blue has a
wavelength.
13. When a galaxy is racing through the cosmos, the wavelength change from our perspective on earth. If
the galaxy is moving towards us the wavelength gets squashed and appears more
. When
they are moving away, they get long and appear more
. This is called
.
14. What did Hubble discover about the movement of the galaxies?
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15. The galaxies may look as they are moving away from us, but in reality, it is
expanding.
that is
16. What did Penzius and Wilson discover with their radio telescope?
17. The WMAP’s mission is to find out what?
18. The tiny, red hot spots are where
will eventually form.
19. What is the age of the universe?
20. What was launched in 1990?
21. Why is putting a telescope in space more accurate than just using one on Earth?
22. With the Hubble, we are not looking OUT into space, we are looking
time.
23. Dark Energy is an energy that is created out of
in
. We have no idea what it is.
24. What is a supernova?
25. What did the scientists discover in 1998 about the expanding universe?
26. A mysterious force is defying gravity. The force that is defying gravity is called
.
27. Dark matter is
. You can only see it by looking at how it distorts things.
28. How much of our universe does dark matter make up? What percentage of our universe is NOT
invisible?