Astronomy from Space Vehicles Is Particularly Useful Because the Telescope

Multiple Choice

Astronomy from space vehicles is particularly useful because the telescope

A) is in a gravity-free state; the mirror is not distorted by gravitational stress and can therefore produce sharper images.
B) moves smoothly and without vibration in a constant orbit and can therefore produce sharp photographs.
C) is above Earth's absorbing and distorting atmosphere and can measure radiation over a very wide wavelength range.
D) is in a clean, dust-free environment and scattered light is much reduced.