The age of the universe and its vast number of stars suggests that extraterrestrial life should be common. If that’s the case, then where is everyone? In this infographic we explore some possibilities.
Rosette Nebula (NASA, Spitzer, This infrared image shows the Rosette nebula, a star-forming region more than 5000 ly away in the constellation Monoceros. Lurking inside this nebula are so-called 'danger zones'. These zones surround super hot stat