Two NASA astronauts celebrate Christmas in outer space after being stranded for months. Astronauts Sunita Williams, 59, and Butch Wilmore, 61, launched into space on June 5 on what was supposed to be a weeklong test flight, however, their mission has been extended until March or even April 2025. The pair has been stuck in space since they traveled to the International Space Station on a spaceship manufactured by Boeing called the Starliner. Safety concerns lead NASA to delay their return to Earth. On Dec. 16, NASA’s Johnson Space Center posted a photo on Instagram showing Williams and another astronaut Don Pettit posing for a holiday season portrait….