An astronomical source is situated behind a thick cloud of hydrogen and dust.On its way to us ________ likely to be absorbed and scattered.

Question

Quizplus · Accepted Answer

Radio waves have the longest wavelength and are therefore least likely to be absorbed and scattered by the hydrogen and dust cloud. Optical light and gamma rays have shorter wavelengths and are more likely to be absorbed and scattered.

An Astronomical Source Is Situated Behind a Thick Cloud of Hydrogen