Three International Space Station crew members are preparing to return to Earth early Friday after 141 days in space. Expedition 45 Flight Engineers Kjell Lindgren of NASA, Oleg Kononenko of Roscosmos (Russian Federal Space Agency) and Kimiya Yui of the Japan Aerospace Exploration Agency (JAXA) will land in their Soyuz spacecraft at 8:12 a.m. EST, northeast of Dzhezkazgan, Kazakhstan.

NASA Television coverage begins at 1 a.m. Friday as they bid the station farewell, enter the Soyuz, and close the hatches. So far, the crew's return is on track, and the space station is in good shape.

Expedition 46 Commander Scott Kelly of NASA, along with crewmates Mikhail Kornienko and Sergey Volkov of Roscosmos, will operate the station for four days until the arrival of three new crew members.

NASA astronaut Tim Kopra, Russian cosmonaut Yuri Malenchenko and Tim Peake of ESA (European Space Agency) are scheduled to launch from Baikonur, Kazakhstan, on Dec. 15 and arrive at the station about 6 hours later.

Kelly and Kornienko are on the first joint U.S.-Russian one-year mission, an important stepping stone on NASA's journey to Mars.

NASA Television coverage times for Soyuz activities are listed below. These activities also will stream online here