In space, no one can hear you scream, but they can sure hear you scratching your head as you try to make sense of the sprawling “Alien” universe. While Ridley Scott’s 1979 haunted-house-in-the-cosmos ...

You’ll have to construct your own Devils Tower out of mashed potatoes (or garden dirt, depending on how much room you’ve got), but an authentic Close Encounters of the Third Kind alien mask is going ...