High Quality Content by WIKIPEDIA articles! The Houston Astros` 2011 season was the 50th season for the franchise in the National League in Houston, their 47th as the Astros and their 12th season at Minute Maid Park. The Astros became the first team in the Major Leagues since 2004 and the only team in the franchise`s 50-year history to lose 100 games in a single season.