Water is discovered on asteroids — by a defunct NASA mission

A pioneering NASA 747 aircraft outfitted with a big telescope was retired a couple years ago. But the mission is still making space discoveries. Scientists used data previously collected by the SOFIA (Stratospheric Observatory for Infrared Astronomy) endeavor to spot evidence of frozen water on two asteroids. It's more evidence that water is pervasive in our solar system. And the discovery provides astronomers more data in their quest to determine how Earth got its water: Billions of years ago,