astronauts

Keir Dullea in a scene from the 1968 film, '2001: A Space Odyssey.' Space exploration was then an exciting possibility, but one far from realization. Stanley Kubrick and science-fiction author Arthur C. Clarke, convinced the moon was only the start, began to toil on a script together. It would be five years before astronauts landed on the moon, on July 20, 1969. Kubrick took flight sooner. '2001: A Space Odyssey' opened in theaters April 3, 1968. (Warner Bros. via AP)

U.S. astronaut Nick Hague, right and Russian cosmonaut Alexey Ovchinin, member of the main crew of the expedition to the International Space Station (ISS), walk prior to the launch of Soyuz MS-10 space ship at the Russian leased Baikonur cosmodrome, Kazakhstan, Thursday, Oct. 11. (AP Photo/Dmitri Lovetsky, Pool)

Trump: US investigators looking into missing Saudi writer

On Monday, May 16, 2016, the International Space Station made its 100,000th orbit circling of the world. NASA says these 100,000 orbits are akin to traveling more than 2.6 billion miles. (Associated Press)