
Former NASA astronaut Scott Kelly is no stranger to the skies.
Kelly, a four-time spaceflyer, one-time space shuttle pilot and three-time International Space Station commander, was a participant in the first public meeting of the NASA study group formed to examine data related to unidentified anomalous phenomena (UAP), a new term for sightings of objects or occurrences in the sky, underwater or in space that can't be immediately explained or identified.