NASA astronaut Christina Koch, who recently returned from the Artemis II mission, shared a touching video of her reunion with her pet dog, Sadie. The video, which has amassed over one million views on Instagram, shows Sadie bursting with excitement as Koch walks through the door. Koch expressed her gratitude for Sadie, stating that the dog taught her about being an emotional support animal. The reunion resonated with many viewers, with comments reflecting their emotional responses. Koch's achievements include breaking records for the longest single spaceflight by a woman, and she was part of the Artemis II crew that orbited the Moon, capturing stunning images of both the lunar surface and Earth. The mission has provided valuable insights into lunar geology, furthering our understanding of the Moon.