No future Astros, only one former Astro with a birthday today ~
RHP Jack Billingham (69)
Billingham pitched for Houston from 1969 to 1971. In 131 appearances (61 starts), he was 29-32 with a 3.75 ERA and a 1.297 WHIP. According to Baseball-Reference, he was a part of this trade to the Reds in 1971.
November 29, 1971: Traded by the Houston Astros with Ed Armbrister, Cesar Geronimo, Denis Menke and Joe Morgan to theCincinnati Reds for Tommy Helms, Lee May and Jimmy Stewart.
He had his best season for the Reds in his 1973 All-Star season. That year he was 19-10 in 40 starts, pitching 293.1 innings with a 3.08 ERA and a 1.200 WHIP. Apparently, his arm didn't fall off after that workload since he pitched another 7 seasons in the majors.
Also, in case you missed it (as I did), RHP Livan Hernandez was 37 yesterday.