13 Dec
2010
13 Dec
'10
1:26 p.m.
In 1973, Explorer 49 was placed in orbit around the moon, It studied LF emissions from the sun, Jupiter and other solar system sources.
See: http://solarsystem.nasa.gov/missions/profile.cfm?Sort=Chron&MCode=Explor...
73 Armando, N8IGJ