Shuttle Endeavour, baby of fleet, on its last trip

By The Associated Press | May 16, 2011 | 5:00 PM EDT

Key facts about space shuttle Endeavour:

— Youngest of the three surviving space shuttles

— Replaced Challenger, destroyed during liftoff in 1986

— Named for ship commanded by British explorer James Cook

— First launch on May 7, 1992, for satellite capture and repair mission

— External fuel tank repaired from Hurricane Katrina damage

— Next home: California Science Center in Los Angeles

Key facts about Endeavour's last mission:

— Commanded by Mark Kelly, husband of Rep. Gabrielle Giffords

— 25th and final flight; second last of 30-year shuttle program

— Six-man crew, all veteran space fliers. Five Americans, one Italian

— 16-day mission; lands on June 1

— Four spacewalks, the last conducted by a shuttle crew

— Carrying spare parts for International Space Station

— Delivering $2 billion particle physics experiment