Big Ideas: Discovery of Water on An Alien Planet And What Happened the Day Dinosaurs Died

In a massive breakthrough, astronomers have discovered water on a super-Earth about 111 light-years away, making planet K2-18b the best candidate in search of alien life. Plus, scientists capture in stunning detail what happened on the last day the dinosaurs died. Researchers invent a device that can mass-produce synthetic human embryos.

    Big Ideas: Discovery of Water on An Alien Planet And What Happened the Day Dinosaurs Died

    Photo: pmdvod.nationalgeographic.com