And on Thursday, she took to Twitter to share a video of the joyous moment that she was reunited with her dog, LBD, who had clearly been eagerly awaiting her arrival.
Koch landed in Kazakhstan on February 6 with European Space Agency astronaut Luca Parmitano and Russian cosmonaut Alexader Skvortskov.
It's clear her adorable doggo is ecstatic to finally have her home. It was Koch's fourth spacewalk. Extended missions to the planned lunar orbiting space station, Gateway, will see both male and female astronauts in space for longer periods of time, and comprehensive studies of both men and women in microgravity situations will be critical for future exploration.
For now, Koch seems to be enjoying her time back on Spaceship Earth.
Koch also revealed that she returned home to Galveston in Texas to a kitchen filled with her favorite food - chips, and salsa - and the first thing she did was relieve her cravings for it. "And yes, she was very excited, I was very excited, I'm not sure who was more excited!".
The electrical engineer-turned astronaut said she counted herself lucky to not have suffered more serious ailments. Koch broke the record for the longest continual space flight for a woman during her ISS residency.
From previous research on astronauts, scientists know that microgravity affects our bodies in different ways. The lack of gravity on the International Space Station can also cause astronauts' hearts to change shape.
NASA also is working to get American companies flying to the International Space Station as ferries for astronauts, a program that now involves SpaceX and Boeing. "She's from the Humane Society and she couldn't be sweeter", Koch told CBS News.
"We take daily sensory inputs for granted until they are absent ..."