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Explorer 49
Explorer 49 Mission to Our Solar System

Goals: Explorer 49 was to be placed into lunar orbit in order to be able to use the Moon as a shield against radio interference from Earth as it listened for radio emissions from the rest of our solar system, the galaxy and beyond.

Accomplishments: The spacecraft achieved lunar orbit and was used successfully to study low-frequency radio emissions from sources including the Sun, Jupiter, the galaxy and extra-galactic sources.


Key Dates
10 Jun 1973:  Launch (14:13 UT)
15 Jun 1973:  Lunar Orbit Insertion (07:21 UT)
Status: Successful
Fast Facts
With its vast antenna array, Explorer 49 was the largest (in physical dimensions) lunar orbiter of the 20th century.

It was the the U.S. placed into lunar orbit until Clementine, 21 years later.

Last contact with the spacecraft was in August 1977.
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Last Updated: 29 Nov 2010