International Space Station Turning 15

(Melbourne, FL) -- NASA and its 15 international partners will celebrate 15 years of operations aboard the International Space Station on Tuesday. The research station orbits 260 miles above the Earth's surface and has become the key component in America's human spaceflight program. Crews have lived continuously on the multi-billion-dollar ISS for more than 13 years. It's scheduled to keep operating through 2020.