F-84FNACA's A. Scott Crossfield first flew a series of aerodynamic parabolas to produce a short period of weightlessness, in a YF-84 at Edwards AFB, Calif. Maj. Charles E. Yeager (USAF) also flew some of these so-called "Keplerian trajectories."Read More Facebook Pinterest X LinkedIn Email https://www.nasa.gov/image-detail/f-84f-2/Copy URL to clipboard> DownloadShareSize1041x781px