The Pegasus Project was a NASA initiative to study the frequency of micrometeoroid impacts on spacecraft by means of a constellation of three satellites launched in 1965.

The Pegasus satellites were named for the winged horse of Greek mythology and was first lofted into space by a NASA Saturn I rocket on February 16, 1965.

[3] Like its namesake, the Pegasus satellite was notable for its "wings", a pair of 96-foot-long (29 m), 14-foot-wide (4.3 m) arrays of 104 panels fitted with sensors to detect punctures by micrometeoroids at high altitudes, in support of the Apollo Program to send crewed lunar landing missions starting by 1970.

Ernst Stuhlinger, then director of the MSFC Research Projects Laboratory, noted that all three Pegasus missions provided more than data on micrometeoroid penetration.

[3] This article incorporates public domain material from websites or documents of the National Aeronautics and Space Administration.