Ever since the Astrodome's grand opening night on April 9, 1965, when the Astros hosted the legendary Mickey Mantle and the New York Yankees in an exhibition game, baseball under glass has produced exciting times and great memories. The Astrodome revolutionized baseball and the game hasn't been the same since. Take a fun look back at the early years. Relive the excitement of the 1980 and '86 playoff series, then review the 1989 season as the Astros' young guns came of age, ready for the 1990s. ...