Balls 8 is a NASA Boeing NB-52B mothership, retired in 2004 after almost 50 years of flying service with NASA. The aircraft is famous for dropping the X-15 aerospace research vehicle on 106 of the 199 X-15 program flights.
| Graph IRI | Count |
|---|---|
| http://dbkwik.webdatacommons.org | 46 |
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