at astronomical observatories capture this light even better, providing a clearer picture of our galaxy. waves are the only waves, besides visible light, to reach Earth's surface.

telescopes can reveal the existence of pulsars in space.
measure the temperature variations in the universe.

waves show the heat emitted by celestial bodies.

rays are used to study hot stars.

rays can detect the presence of interstellar gas clouds.

rays show areas where large quantities of energy are released.