January 19, 2015 - Cloaked in Secrecy

Cloaked in Secrecy Although several shuttle missions in the early 1980s had carried military payloads, STS-51C was the first dedicated mission for the Department of Defense. Launched thirty years ago this week, the shuttle Discovery and its crew of five astronauts spent a brief three days in orbit. In stark contrast to previous missions, the press kit for STS-51C was much thinner, with only the most basic details about the flight being released to the public. It is believed that the crew deployed a signal intelligence satellite called Magnum/ORION for the Air Force. A rocket motor attached to the satellite boosted it into geostationary orbit, 35,900 km (22,300 mi) above Earth. Commanding this flight was Ken Mattingly, who orbited the Moon as Command Module Pilot for the Apollo 16 mission in 1972.

Image credit: NASA

Weekly Calendar

January 19-25 2015

Holidays - Sky Events - Space History

Monday 19

Martin Luther King, Jr. Day

Mars 0.2° south of Neptune

1747: Johann Bode born
1851: Jacobus Kapteyn born
1965: Gemini II launched
2006: New Horizons launched

Tuesday 20

New Moon 8:14 AM ET
Mercury appears stationary

1573: Simon Marius born
1930: Edwin “Buzz” Aldrin born
1966: Apollo A-004 launched, first flight test of CSM hardware
1978: Progress 1 launched