In order to "see" into the dense molecular clouds of the Eagle Nebula (image below),what wavelength of light must be used?

Question

Quizplus · Accepted Answer

Infrared light has longer wavelengths than visible light, which allows it to penetrate through dust and gas that obscure visible light. This feature makes infrared light the ideal choice to see into the dense molecular clouds of the Eagle Nebula. Additionally, stars at various stages of formation emit strongly in the infrared, providing further motivation to use this wavelength to study the Eagle Nebula.

In Order to "See" into the Dense Molecular Clouds of the Eagle