OTD…April 19 and STS-100

The flight of Gemini 4 launched today in 1965 for NASA’s first Extra Vehicular Activity spacewalk by Ed White on a four-day orbital mission with commander Jim McDivitt.

#OTD in 1997…Cassini was launched on its billion-mile trek to Saturn

Today in 2011, shuttle Discovery made a graceful landing at Kennedy Space Center, returning from her final voyage after a remarkable three-decade life of service.