Antares primarily emits energy in which wavelength that is not visible?

Antares, being a red supergiant star, primarily emits energy in the infrared part of the electromagnetic spectrum. While it does produce energy across various wavelengths, the significant emissions in the infrared range are particularly notable due to the characteristics of its surface temperature and the opacity of its outer layers. Infrared radiation is associated with cooler objects in space, and because Antares has a relatively low surface temperature compared to hotter stars, much of its energy is radiated in the infrared spectrum.

This emission is critical in studying the star, as infrared observations can penetrate dust clouds and provide insights into the star's structure and surrounding environment. Observing Antares in infrared wavelengths allows astronomers to gather more information about its composition and the processes occurring around it, which is less accessible through visible light observations.