"A New Era: 200,000 Stars & Alien Planets" --WATCH All-Day-Launch Coverage of NASA's New Alien-Planet Hunter, TESS Spacecraft Today

"My great hope is that TESS will find new mysteries," said Dr. Stephen Rinehart, a project scientist for the mission at NASA's Goddard Space Flight Center in Greenbelt, Maryland. "Maybe we'll find something out there that nobody expected and will...