The club was initially founded in 1962 as the Houston Colt .45's and defeated the Chicago Cubs in their first game, 11-2 on April 10. In 1965, the Colt .45's changed their name to the Houston Astros, and played Baseball's first indoor game at the Astrodome on April 9, defeating the New York Yankees 2-1 in an exhibition game. So, to answer the question, the "Astros" debuted on April 9, 1965 though the Houston team had been in place for 3 years. The Astros first season in MLB was in 1962.
2005
The Houston Astros have a promotional lunch box given to some number of fans at one or more of their games before the start of the school year. Manufactured by Kraft.
In 1965, the Houston Astros had a 65-97 record.
In 1966, the Houston Astros had a 72-90 record.
In 1967, the Houston Astros had a 69-93 record.
In 1982, the Houston Astros had a 77-85 record.
In 1983, the Houston Astros had a 85-77 record.
In 1984, the Houston Astros had an 80-82 record.
In 1985, the Houston Astros had an 83-79 record.
In 1986, the Houston Astros had a 96-66 record.
The Houston Astros play in the National League Central division
It was founded in 1836.