Four astronauts aboard the International Space Station are returning to Earth today (Jan. 14), more than a month earlier than originally planned.

The medical evacuation from the space station is underway, with four astronauts in their spaceship heading back to Earth so one of them can receive medical treatment.

The four crew of NASA astronauts Zena Cardman, commander, and Mike Fincke, pilot, along with JAXA astronaut Kimiya Yui and Roscosmos cosmonaut Oleg Platonov, both mission specialists, are cutting thei...