Event:
NASA launches its 1st Orbital Geophysical Observatory (OGO-1)
More Notable Events on September 4:
1994 Kansai International airport officially opens
1972 U.S. swimmer Mark Spitz becomes 1st athlete to win 7 olympic gold medals
1957 Ford Motor Co introduces Edsel
1807 Robert Fulton begins operating his steamboat
1682 English astronomer Edmund Halley sees his namesake comet
