At which wavelength range is there no current or planned space observatory?
A)radio
B)infrared
C)visible
D)X-ray
E)gamma-ray

Question

Quizplus · Accepted Answer

There are current or planned space observatories for infrared, visible, X-ray, and gamma-ray wavelengths, but as of my last update, there are no specific plans for new space observatories dedicated to the radio wavelength range. This is partly because radio wavelengths can be effectively observed from the ground, unlike some of the other wavelengths which are better observed from space due to atmospheric interference.

At Which Wavelength Range Is There No Current or Planned