In space, so the Alien tagline goes, nobody can hear you scream. One of the most memorable pieces of movie promotion ever, it refers to the effect of the vacuum of space on the things human senses require an atmosphere to experience. It’s a lesson that Joss Whedon used to great effect with the Serenity‘s silent engine light-ups in Firefly, while Star Wars ignored it completely to give us improbable weapon noises in space battles.
Sound may not pass through the vacuum of space, but that’s not to say there are not things other than light for the senses. The Apollo astronauts reported that moon dust released a smell they described as akin to burnt gunpowder once it was exposed to the atmosphere inside their lander, and by now you may have heard that there is a Kickstarter that aims to recreate the smell as a fragrance. Will it replace the cloying wall of Axe or Lynx Africa body spray that pervades high-school boys’ changing rooms, or is it a mere novelty?