Answer:
Electromagnetic waves can travel in vacuums.
Step-by-step explanation:
Scientists use different types of telescopes to find and study supernovas. Some telescopes use visible light to observe the supernova's colors, while others study the X-rays and gamma rays dispersed in the explosion. These electromagnetic waves are used because electromagnetic waves can travel in vacuums, like space, whereas sounds waves cannot. In addition, the electromagnetic spectrum travels at the speed of light (much faster than sound waves), can be absorbed, and are not created by physical vibrations.