Sound cannot travel through space because there is no air to carry it.

In 1660, a scientist named Robert Boyle proved that sound needs a medium to travel. He put a ringing watch inside a glass jar and sucked out all the air. As the air left the jar, the sound of the watch faded away until it was silent.Sound travels at different speeds depending on what it moves through. In air, it moves at about 343 meters per second. It moves much faster in water at 1,481 meters per second and even faster through solid steel.Space is not completely empty, but it is very close. It only has about 5 to 10 atoms in every cubic centimeter. For comparison, the same amount of air on Earth has 25 quintillion molecules.Because particles in space are so far apart, they cannot hit each other to pass along a sound wave. Light and radio waves can travel through a vacuum, but sound cannot. This means a giant star exploding in space would make no noise at all.