Question

Our atmosphere is completely transparent to _____ and _____ radiation, which enables observations of these wavelengths from the ground. All other wavelengths must be observed from space.

Answer 1

Radio waves and visible

Step-by-step explanation:

The atmosphere is completely transparent to visible light and radio waves. This enables observation of these wavelength from ground. So, ground based observatories are used to observe these wavelengths.

Other wavelengths like gamma rays, x-rays and UV rays are not able reach the ground. Thus, in order to observe these wavelengths, space observatories are set up.