Christina Koch made headlines a few months ago for being part of the very first all-female spacewalk alongside Jessica Meir. Now the astronaut is making headlines again, because her crew just landed back on earth after being in space for 328 days! Which means Christina is also now the NASA record holder for longest space mission by a woman!! Go Christina! And when she got home... it was the sweetest reunion. Her dog was SO HAPPY TO FINALLY SEE HER!!! You have to watch the adorable video below!!