An American astronaut and Russian cosmonaut have returned to Earth after an unprecedented period of almost a year in space for NASA. The time spent by .
After nearly a year orbiting the Earth, US astronaut Scott Kelly was greeted by friends and family upon his arrival home. He explained the ubelievable feeling .
Scott Kelly says goodbye to the International Space Station; find out what his transition to life back on Earth will be like. Tune into World News Tonight with David .
Astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko left the International Space Station Tuesday, finally landing in Kazakhstan, after nearly a year in .