The coolest and dimmest space objects emit radiation of longer wavelengths than those we can see. A detector for which type of electromagnetic radiation is most suitable to study cool dim stars?

Question

Gamma ray
Infrared
Ultraviolet
X-rays

Answer 1

To study cool dim stars, the most suitable type of electromagnetic radiation to use is Infrared. Cool stars emit most of their radiation at longer wavelengths, including infrared wavelengths, making infrared detectors ideal for observing them.