The world's most experienced space-woman has returned to Earth after a record-breaking flight.

NASA astronaut Peggy Whitson and two other astronauts landed in Kazakhstan late Saturday. 

Whitson, who recently spent nine months in space, departed from the International Space Station earlier in the day. 

Counting all her flights, Whitson has logged 665 days in space, more than any other American.

During her third and last mission, the 57-year-old bio-chemist became the oldest woman in space. 

She also performed her 10th spacewalk -- more than any other woman. 

Whitson said she is looking forward to some pizza and the luxury of flushing toilets.