Live coverage: Soyuz crew capsule departs station, lands in Kazakhstan

A new navigation satellite lifted off aboard a Soyuz rocket Sunday and reached an orbital perch 12,000 miles above Earth to test upgraded capabilities aimed at improving positioning services for Russian military and civilian users.

With Hurricane Isaias threatening Florida’s East Coast, astronauts Doug Hurley and Bob Behnken are awaiting a go-ahead on plans to undock from the International Space Station Saturday, setting up a fiery plunge to splashdown Sunday, presumably in the Gulf of Mexico, to close out a 64-day flight.

The ISS Deorbit Vehicle, or DV, will be a custom-built, one-of-a-kind spacecraft needed to make sure the space station re-enters the atmosphere at the precise place and in the proper orientation to insure any wreckage that survives the 3,000-degree heat of re-entry will crash harmlessly into the sea.