To succeed, alien hunters will need to find planets with air. And the cosmic shoreline ... that straddle where we think the cosmic shoreline is,” Kempton said, “and map out where that boundary is.” ...

With the help of a three-dimensional map of stars near the sun, astronomers can search for alien planets that might hold life. The map was created by NASA's Chandra X-ray space telescope ...

A new set of data released by NASA's Kepler mission catalogs 219 newfound alien planet candidates. According to NASA, 10 of the new worlds appear to be rocky in the habitable zones of their stars ...

They peered through the atmosphere to map its 3D structure for the first ... of the chemical makeup and weather of other alien worlds. "This planet's atmosphere behaves in ways that challenge ...