Spaceflight Associated Neuro-Ocular Syndrome, or SANS, impacts more than 70% of astronauts, causing– what doctors think might be structural changes in the brain, ultimately causing changes in vision.

SpaceX's Polaris Dawn mission was a spaceflight for the ages. Here's what the historic mission was like from launch to landing.

Four private astronauts are back on Earth after a five-day mission that set firsts and broke records in an effort to advance human spaceflight.

SpaceX’s Polaris Dawn mission set new records in space exploration, including the first private spacewalk and the highest orbit since the Apollo era. The mission’s success marks a significant step forward for commercial space ventures.