Watch NASA astronauts during their Saturday spacewalk

(CNN) -- Astronauts Mike Hopkins and Victor Glover Jr. are spending their Saturday conducting a spacewalk outside of the International Space Station. The spacewalk, which assists with continued upgrades to the orbiting laboratory, began at 8:14 a.m. ET. It is…

Director James Gray muses on 'Ad Astra'

"I'm sorry to get sententious on you," James Gray says around the midpoint of our interview. The director of "Ad Astra" is apologizing for keeping things highbrow, which is no reason to apologize at all.

NYT: Possible first criminal case in space

NASA is examining a claim that an astronaut improperly accessed the bank account of her estranged spouse from the International Space Station, The New York Times reported Friday -- potentially the first criminal allegation from space.

NASA's TESS mission spots Earth-size exoplanet

NASA's planet-hunting TESS mission has found its first Earth-size exoplanet in a star system only 53 light-years from Earth. Another exoplanet, a warm mini-Neptune, was found in the same system.