Astronomers use different types of telescopes to observe different parts of the electromagnetic spectrum. This allows astronomers to study objects in space.
Each type of electromagnetic wave can travel through space at the speed of
light. Sometimes astronomers will use two telescopes on opposites sides of a
planet and combine the image from each telescope. When combined, the two
telescopes act like one giant telescope and have the ability
to reveal important
details from space.

A: Gamma Rays
B: Ultraviolet
C: Microwabe
D: Radio wabes