Which electromagnetic radiation can be used in space to detect low temperatures?

Gamma Rays
Infra Red
Ultra Violet

Or any of the others?

The electromagnetic radiation that can be used in space to detect low temperatures is Infrared (IR) radiation.

To understand why IR is suitable for detecting low temperatures, let's first understand the nature of electromagnetic radiation. Electromagnetic radiation is a form of energy that travels in waves and consists of different types based on their wavelengths. The electromagnetic spectrum includes radio waves, microwaves, infrared rays, visible light, ultraviolet rays, X-rays, and gamma rays.

Among these, infrared radiation has longer wavelengths than visible light but shorter wavelengths than microwaves. It falls in the spectrum right after red light.

IR radiation is particularly useful for detecting low temperatures because it is emitted by objects based on their thermal energy or heat. Every object, regardless of its temperature, emits some form of IR radiation. The hotter the object, the more IR radiation it emits.

In space, where temperatures can vary widely, IR radiation can be used to detect these temperature differences. Specialized instruments called infrared detectors or sensors are employed in space probes and telescopes to capture and analyze the infrared radiation from celestial objects. By studying the patterns and intensities of IR radiation, scientists can determine the temperature of distant objects in space, including stars, galaxies, and even cosmic dust clouds.

In summary, out of the given options, infrared radiation is the correct choice for detecting low temperatures in space.