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who has home field advantage in the world series
The Houston Astros had home-field advantage for the 2019 World series.
what is the houston astros' home stadium
Minute Maid Park is a ballpark in Downtown Houston, Texas, United States, that opened in 2000 as the home stadium for the Houston Astros of Major League Baseball.
why are the houston astros called the astros
The current name, the Houston Astros, reflecting Houston's role as the host of the Johnson Space Center, was adopted in 1965, when they moved into the Astrodome.
what were the houston astros called before they were the astros
Before changing their name to the Houston Astros, Houston's Major League Baseball team was known as the Colt .45s.

Question: why
Self-contained rewrite: why were the houston astros known as the colt .45s