Astrobuff

Can you hear in space? In theory, if there is nothing to receive the sound, there is no sound. Because there are no "air waves" in space to conduct the sound, it would not carry. So, the object would make a noise, but it would not carry to any receiver, and no one would hear it.

If you suspend three grains of sand in a large sports arena, such as Madison Square Garden in New York, the arena will be more closely packed with sand than our galaxy is with stars.