Video: Soyuz MS-01 leaves the space station for landing

Russian rocket technicians planned to swap out a failed inertial measurement unit inside a Soyuz rocket overnight Sunday after a failure in the navigation system forced officials to abort the booster’s planned launch of five satellites from French Guiana.

A Russian satellite burned up in Earth’s atmosphere Tuesday, less than three days after it failed to deploy from its rocket after reaching orbit, according to tracking data released by the U.S. military.

Astronaut Scott Kelly and cosmonaut Mikhail Kornienko are making final preparations for return to Earth Tuesday evening, closing out a record 340-day stay aboard the International Space Station where they served as medical test subjects to learn more about the long-term effects of weightlessness, space radiation and isolation.