The SOFIA Project Is

Multiple Choice

The SOFIA Project is

A) a small Lear jet with an 8-inch visible-light telescope on board, designed to search for lost NASA spacecraft
B) an x-ray telescope flying many kilometers up (so high that it had to be automated)
C) a balloon designed to fly above the ozone layer and search for ultraviolet radiation from space
D) an airplane with an infra-red telescope on board designed to fly above much of the water vapor in the Earth's atmosphere
E) a NASA aircraft used only by Hollywood movie-makers to teach what it's like in free fall