Week 7, clip 1

Timepoint:  08:59.7

1) Shapley discovered that the Milky Way galaxy was much larger than previously thought.  He determined that the center of the galaxy was in the direction of which constellation?

- Orion
- Leo
- Aquarius
- Sagittarius

Timepoint: 08:59.8

2) How far away, in parsecs, is the Sun from the galactic center (based on our modern knowledge)?

- 650 pc
- 8 kpc
- 15 kpc
- 70 kpc

Timepoint:  08:59.9

3) What effect does interstellar dust have on astronomical observations?

- Dust reduces the apparent brightness of stars based on their distance.
- Dust reduces the luminosity of stars based on their composition. 
- Dust reduces the apparent brightness of stars based on their composition.
- Dust reduces the luminosity of stars based on their distance.

Answers:
1) Sagittarius

2) 8 kpc

3) Dust reduces the apparent brightness of stars based on their distance.