Nebulas are mostly made up of dust, hydrogen, helium, and ionised gases. There are four types of nebulae: planetary nebulas, supernova remnants, dark nebulas, and emission nebulas.

The patrons of the Slaughtered Lamb, the traditional Yorkshire pub with some striking decor in John Landis' American Werewolf in London, may want to keep their werewolf on the down low, but the ...