WBZ-TV (sometimes informally referred to as "BZ" both on- and off-air) was a pioneer in Boston television. In 1948, it began live broadcasts of Boston's two Major League Baseball teams, the Red Sox and the Braves, broadcasts that at first were split with WNAC-TV. It was also the first Boston station to have daily newscasts, starting with the station's very first night on the air. On October 12, 1957, WBZ-TV broadcast a half-hour special program on Sputnik 1, featuring a motion picture of the final stage of its rocket crossing the pre-dawn sky of Baltimore, shot by sister station WJZ-TV.