In space, no one can hear you scream. You may have heard this saying. It's the tagline from the famous 1979 science fiction movie "Alien." It's a scary thought, but is it true? The simple answer is ...

Every time NASA or the European Space Agency releases an audio clip from deep space, millions of listeners assume they are hearing actual sound captured by a microphone floating in the void. They are ...

How far can sound travel through space, since it’s so empty? Is there an echo in space? – Jasmine, age 14, Everson, Washington In space, no one can hear you scream. You may have heard this saying.

Space is silent, or so we’re told. In the vast vacuum between stars and planets, sound waves can’t travel as they do on Earth. But what if that silence is just an illusion? What if the cosmos is ...