SpaceX, NASA clear Crew-13 for Oct. 1 ISS launch with four astronauts

NASA and SpaceX have cleared the way for four astronauts to launch toward the International Space Station on Thursday morning, October 1st, aboard a Falcon 9 rocket from Cape Canaveral Space Force Station in Florida. The Crew-13 mission is scheduled to lift off at 11:10 a.m. Eastern time, with the spacecraft expected to dock at the orbiting laboratory less than eight hours later. Officials from both agencies confirmed the go-ahead on Wednesday evening, saying all hardware and systems are ready for flight—but they acknowledged that the weather forecast remains uncertain, with current predictions showing only a 55 percent chance that conditions will be favorable enough to proceed.

The mission will carry four crew members to orbit in SpaceX's Crew Dragon capsule, which the company has named Grace. Commander Jessica Watkins will lead the flight, making history as the first NASA astronaut to launch aboard a Crew Dragon for a second time. Her three crewmates are all flying to space for the first time: Luke Delaney, a NASA astronaut serving as pilot; Joshua Kutryk from the Canadian Space Agency; and Sergey Teteryatnikov, a Russian cosmonaut. Both Kutryk and Teteryatnikov will work as mission specialists during their time in orbit.

The crew's arrival at the station will mark the beginning of the transition between long-duration expeditions. The four astronauts currently aboard the ISS as part of Crew-12 have been preparing for their departure, though their stay was extended by a couple of weeks when Crew-13's original September 12th launch date slipped. Engineers discovered a leak in the Crew Dragon's propulsion system during pre-flight checks, requiring additional time for repairs and verification. Mission managers have now certified the spacecraft as ready to fly.

Watkins, Delaney, Kutryk, and Teteryatnikov will spend approximately six months aboard the station as part of ISS Expedition 75, contributing to the routine maintenance and upkeep that keeps the orbiting laboratory operational. Beyond daily station operations, they will participate in a range of scientific investigations that have direct implications for medicine and long-duration spaceflight. Much of the research focuses on understanding how the human body adapts to weightlessness and microgravity, work that NASA officials say could lead to breakthroughs in treating heart disease and Parkinson's disease. The crew will study human stem-cell-derived tissues to help researchers improve disease modeling and pharmaceutical testing.

The mission also includes trials aimed at advancing food production in space, a capability that becomes increasingly important as NASA and its international partners plan longer missions beyond Earth orbit. The crew will monitor crop growth experiments and help scientists better understand how blood flow changes in microgravity, knowledge that could inform the design of new medical equipment for monitoring astronaut health during extended spaceflight. These investigations represent the kind of foundational research that supports both near-term station operations and the longer-term goal of sustaining human presence in deep space.

If weather forces a delay on Thursday, mission managers have identified Friday, October 2nd, as a backup launch opportunity, with a target liftoff time of 10:47 a.m. Eastern time. The forecast uncertainty—with nearly half a chance of weather violations—reflects the reality of launching from Florida's Atlantic coast, where afternoon thunderstorms and other atmospheric conditions can develop quickly during the fall season. For now, all systems are ready, and the crew is prepared to fly.