SpaceX postpones launch of NASA's planet-hunter spacecraftSpaceX postponed the launch of NASA's new planet-hunting mission Monday in order to verify the Falcon 9 rocket's navigation systems, the California-based company said. The next opportunity to blast off the $337 million satellite -- which aims to advance the search for extraterrestrial life by scanning the skies for nearby, Earth-like planets -- will be Wednesday. The Transiting Exoplanet Survey Satellite, or TESS, is "in excellent health and remains ready for launch," SpaceX said on Twitter.