Soyuz Launch Aborted 20 Seconds Before Liftoff, Crew Safe

The scheduled launch of a Soyuz spacecraft carrying three crew members to the International Space Station was automatically aborted 20 seconds before liftoff due to a failure in the rocket's engine sequence start. The crew, including NASA astronaut Tracy C. Dyson, Roscosmos cosmonaut Oleg Novitskiy, and spaceflight participant Marina Vasilevskaya, is safe, and the next launch opportunity is on Saturday pending resolution of the issue. The abort may impact a separate cargo resupply mission by SpaceX, and the crew will join others already aboard the space station once the launch is rescheduled.