NASA astronaut Tracy C. Dyson, accompanied by Roscosmos cosmonauts Nikolai Chub and Oleg Kononenko, will depart from the International Space Station aboard the Soyuz MS-25 spacecraft, and return to Earth. Dyson, Chub, and Kononenko will undock from the orbiting laboratory’s Prichal module at 4:37 a.m. EDT Monday, Sept. 23, heading for a parachute-assisted landing at