![Houston MLB team changes from Colt .45s to Astros on Dec. 1, 1964 - ABC13 Houston](https://s.hdnux.com/photos/01/03/27/36/17659829/7/rawImage.jpg)
It's been 57 years since the Houston Astros were the Colt .45s
![Houston MLB team changes from Colt .45s to Astros on Dec. 1, 1964 - ABC13 Houston](https://s.hdnux.com/photos/45/13/75/9748340/4/rawImage.jpg)
When the Colt .45s became the Astros and the origins of other Houston sports team names
![Houston MLB team changes from Colt .45s to Astros on Dec. 1, 1964 - ABC13 Houston](https://sabr.org/sites/default/files/1963-Astros-rookies.jpg)
September 27, 1963: Houston Colt .45s start a lineup of all rookies – Society for American Baseball Research
![Houston MLB team changes from Colt .45s to Astros on Dec. 1, 1964 - ABC13 Houston](https://s.hdnux.com/photos/45/13/75/9748326/4/rawImage.jpg)
When the Colt .45s became the Astros and the origins of other Houston sports team names
![Houston MLB team changes from Colt .45s to Astros on Dec. 1, 1964 - ABC13 Houston](https://s.hdnux.com/photos/45/15/27/9754058/4/rawImage.jpg)
When the Colt .45s became the Astros and the origins of other Houston sports team names
![Houston MLB team changes from Colt .45s to Astros on Dec. 1, 1964 - ABC13 Houston](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/6/6b/Houston-Astros-Logo.svg/640px-Houston-Astros-Logo.svg.png&w=640&q=50)
Houston Astros - Wikiwand
![Houston MLB team changes from Colt .45s to Astros on Dec. 1, 1964 - ABC13 Houston](https://www.astrosdaily.com/files/gallery/Johnson_Ken_102.jpg)
Houston Colt .45s history - 1964 season
![Houston MLB team changes from Colt .45s to Astros on Dec. 1, 1964 - ABC13 Houston](https://cdn.abcotvs.com/dip/images/12405962_110122-ktrk-ap-astros-ws-17-win-img.jpg)
Houston MLB team changes from Colt .45s to Astros on Dec. 1, 1964 - ABC13 Houston
![Houston MLB team changes from Colt .45s to Astros on Dec. 1, 1964 - ABC13 Houston](https://s.hdnux.com/photos/11/76/66/2616731/6/rawImage.jpg)
When the Colt .45s became the Astros and the origins of other Houston sports team names
![Houston MLB team changes from Colt .45s to Astros on Dec. 1, 1964 - ABC13 Houston](https://sportsteamhistory.com/wp-content/uploads/2017/02/Astrodome-600x401.jpg)
Houston Colt 45's Team History