The author implies that the satellite that carries the Hubble was specifically designed so that _________. A. the known defective mirror could be replaced in space rather than on Earth B.
The author implies that the satellite that carries the Hubble was specifically designed so that ________
A. the known defective mirror could be replaced in space rather than on Earth
B. maintenance could be done by travelling astronauts
C. the Hubble could move easily
D. the mirror could contract and expand