“Things can explode in space. Explosions in space are possible but it is not as visually impressive as you would imagine. What do explosions need? Oxygen. Does space have any? Nope. What do explosions do? Make a deafening sound. The tagline for the movie Alien is, “In space, no one can hear you scream.” You can’t hear in space because sound cannot exist in a vacuum. Space ships in Star Trek and Star Wars wouldn’t make any noise in space. Movies like Interstellar and Gravity and tv shows like Firefly portray silence in space during an explosion accurately.”