please help with the Astronomy question 1-7, thank you
1. Light passing through a Newtonian telescope with an eyepiece encounters how many mirrors and lenses before reaching the back of your eye?
A. 1
B. 2
C. 3
D. 4
2. You take the spectrum of a star and measure a redshift of (delta wavelength)/wavelength = 1/3000. The star is moving:
A. Toward you at 300 km/s
B. Toward you at 100 km/s
C. Away from you at 100 km/s
D. Away from you at 300 km/s
3. Once done taking an image, CCDs read out:
A. One pixel at a time
B. One row of pixels at a time C. All pixels at the same time
4. Which collects more light?
A. A 1-meter diameter telescope in 1 second
B. A 0.1-meter diameter telescope in 10 seconds
C. They collect the same amount of light
5. Which NASA spacecraft (past or present) would you use to detect a gamma-ray burst?
A. Spitzer
B. Hubble
C. Chandra
D. Compton
6. Not a member of the Kuiper Belt:
A. Eris
B. Haumea
C. Makemake
D. Pluto
E. Sedna
7. First spacecraft to orbit Saturn:
A. Cassini
B. Galileo
C. Messenger
D. Pioneer
E. Voyager