Butch Wilmore and Suni Williams, two veteran NASA astronauts who have been stuck on the International Space Station for nine months, are scheduled to begin their return to Earth early on Tuesday morning on a long-awaited flight home to cap an unusual mission.

NASA plans to provide live coverage of both the undocking process and the ship's reentry into Earth's atmosphere through landing. People at home can watch the hatch closing with a broadcast that begins at 10:45 p.m. ET on March 17. Undocking will roll into the next day at 12:45 a.m. on March 18 .