What type of radiation do space telescopes primarily observe?

Space telescopes are designed to observe a broad range of electromagnetic radiation in order to gather comprehensive data about celestial objects. The correct choice encompasses visible light, infrared, ultraviolet, and occasionally gamma-ray radiation, which are critical for studying various astronomical phenomena.

Each type of radiation provides unique information about the universe. Visible light allows astronomers to observe stars, galaxies, and other objects in their natural state. Infrared radiation is crucial for studying cooler objects like dust clouds, brown dwarfs, and exoplanets that might be too faint or obscured in visible light. Ultraviolet radiation helps in the examination of the atmospheres of stars and galaxies, while gamma-ray observations can reveal high-energy processes related to black holes, neutron stars, and supernovae.

In contrast, the other choices are limited to singular forms of radiation, which would significantly restrict the scope of observation and understanding that space telescopes aim to achieve. Only observing infrared, only visible light, or only radio waves does not provide a complete picture of the cosmos, emphasizing the significance of the diverse range of electromagnetic radiation utilized by space telescopes to enhance our understanding of the universe.