An eight-day mission for NASA astronaut Sunita Williams to the International Space Station (ISS) turned out to be a challenge of a lifetime as problems cropped up on her Boeing space flight that stretched her stay in orbit to over nine months.

Welcome back, #SunitaWilliams and crew!

Space travel is never easy, but true explorers like you embody the spirit of embracing the unknown.

After spending nine long months in space, you’ve finally touched down safely.

Although the journey lasted longer than planned, your… pic.twitter.com/8Zo8m1Xd0g