Read the following passage and answer if the question is true or false.
Passage: The Houston Astros are an American professional baseball team based in Houston, Texas. The Astros compete in Major League Baseball (MLB) as a member club of the American League (AL) West division, having moved to the division in 2013 after spending their first 51 seasons in the National League (NL). The Astros have played their home games at Minute Maid Park since 2000.

Question: did the astros used to be in the national league?

Is the answer True or False? Respond with only "True" or "False" and no additional text.
True.