In Pictures: 2013’s geekiest 25th anniversaries

Space shuttle flights resume

NASA’s space shuttle program had been grounded since the Challenger disaster of Jan. 28, 1986. From the NASA website: "On 29 September 1988, NASA Headquarters's officials were excited at the prospect of a successful return-to-flight launch of Space Shuttle Discovery. At 11:37 a.m., Discovery lifted off the launch pad and quickly accelerated out of sight to the relieved applause and yells of approval of the tens of thousands of spectators who gathered to wish the crew and NASA well. As the craft climbed into the blue sky, many members of the launch control team were filled with emotion, some moved to tears."