NASA astronaut spots 'two metallic spherical orb' UFOs flying by his plane at 9,000ft
American Leroy Chiao, who was the 196th NASA astronaut to fly in space and the 311th human in space, served on multiple missions during an illustrious career after qualifying in 1991. Mr Chiao, who is also a keen light aircraft pilot, said he was flying his plane back to Houston in Texas when something odd suddenly whizzed past.