Most interstellar matter is too cold to be observed optically.Its radiation can be detected in which part of the electromagnetic spectrum?

Question

Quizplus · Accepted Answer

Interstellar matter is generally too cold to emit visible light, but it does emit radiation in the infrared part of the electromagnetic spectrum. This radiation can be detected using specialized telescopes and instruments designed to observe in the infrared range. Gamma ray, ultraviolet, and X-ray radiation are typically associated with much hotter objects, such as active galaxies or supernovae explosions.

Most Interstellar Matter Is Too Cold to Be Observed Optically