I have never seen these Lego Classic Space Minifigs before. Needless to say, I'm getting a pair right now because they are so cute and amazingly retro that they blew my underpants off.
You can get the space minifig ones at Nuji for a ridiculous $17 a pair. And if they are sold out, maybe you can grab these Indiana Jones ones. Not as amazing as the classic Lego Space, but pretty amazing on their own right. [Etsy or Nuji via Cool Hunting—Thanks Gitemsteve!]