Why can't we hear sounds in space?
Show answer & explanation
Answer: No air molecules to vibrate
Space is too cold for sound — Wrong. Temperature doesn't prevent sound. The Arctic is cold but sounds travel fine there.
No air molecules to vibrate ✓ — Correct! Sound waves need molecules to vibrate and carry the wave. Space is a near-perfect vacuum with almost no molecules. Explosions in space are silent! Astronauts communicate by radio waves, which don't need air.
Helmets block all sound — Wrong. Helmets don't block sound—astronauts can hear inside suits. The issue is no air outside to carry sound.
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