1)
- What are the characteristics of stars in the bulge of a spiral galaxy?
- What are the characteristics of stars in the disk of a spiral galaxy?
Classify the galaxies below and describe what feature(s) you used for your classification.
2) What type of galaxy is pictured above?
Be specific: Sa, SBb, E4, etc..
3)What type of galaxy is pictured above?
4)What type of galaxy is pictured above?
5)What type of galaxy is pictured above?
6)What type of galaxy is pictured above?
7)What type of galaxy is pictured above?
8)The planet HD149026b has been found to have carbon and oxygen in its atmosphere. It is 77 pc from us. What year did the light we just received leave that planet?
9)What is the distance of a galaxy moving away from us at 250,000 km/s?
(use Ho=73.8 km/s/Mpc
10) Hubble's redshift relationship tells us that galaxies are moving away from us in proportion to their distance. The farther away a galaxy is, the faster it is moving away from us. What happens if you could reverse time? What is the consequence of this?
11)What is the distance of a galaxy moving away from us at 6,500 km/s?
Convert your answer to light years.
(use Ho=73.8 km/s/Mpc