The detectors on the Spitzer Space Telescope were cooled to near absolute zero in order to:
A)allow the electronics in these instruments to operate most efficiently.
B)keep the telescope more nearly stationary.
C)prevent the infrared radiation from the instruments interfering with the infrared signals fromspace.
D)improve the angular resolution of the telescope.

Question

Quizplus · Accepted Answer

Cooling the detectors helps to prevent the infrared radiation from the instruments interfering with the infrared signals from space. This allows for more accurate measurements of the infrared radiation emitted by celestial objects. The detectors on the Spitzer Space Telescope were cooled to near absolute zero in order to prevent the infrared radiation from the instruments interfering with the infrared signals from space. Cool temperatures reduce unwanted thermal signals and allow the detectors to be more sensitive to the faint infrared radiation coming from distant objects in space.

The Detectors on the Spitzer Space Telescope Were Cooled to near Absolute