The name of the Infrared Orbiting Observatory launched in 2003 is the:
A) Hubble Space Telescope.
B) Compton Observatory.
C) Spitzer Space Telescope.
D) Chandra Orbiting Telescope.
E) Newton Imaging System.
Question 2
Hubble's Law starts as a plot of recessional ________ versus distance to the galaxies.
Fill in the blank(s) with correct word