Question

An old movie poster used a quote "In space, no one can hear you scream!" Why this is true or not true

Answer 1

true because sound does not travel in space

Answer 2

I can think of two reasons right away . . .

1). There's no air in space. Nothing to fill your lungs with,
so you can't scream.

2). Even if you had a lung full of air and could scream, sound
needs something like air to travel through. With no air in space,
the sound from you couldn't go anywhere.