1965 Major League Baseball season
The Houston Colt . 45s became the Houston Astros , as they moved from Colt Stadium to the new Astrodome , becoming the first team to play their home games indoors , rather than outdoors . 
<triplet> Colt Stadium <subj> Houston Colt .45s <obj> occupant <subj> Houston Astros <obj> occupant <triplet> Astrodome <subj> Houston Colt .45s <obj> occupant <subj> Houston Astros <obj> occupant