Respuesta :

taskmasters
Four regions of the electromagnetic spectrum that astronomers use when observing objects in the space are the following enumerated answers.
1. First is Ultraviolet
2. Next is Infrared
3. Then the radio
4. Lastly the Visible lights.

These are the answers to the problem.

Answer:

Ultraviolet, Infrared, Radio, and Visible light.

Explanation: