"flyby." YourDictionary, n.d. Web. 05 December 2018. <https://www.yourdictionary.com/flyby>.
flyby. (n.d.). Retrieved December 05th, 2018, from https://www.yourdictionary.com/flyby
pl.fly·bys, also fly-bys
A flight passing close to a specified target or position, especially a maneuver in which a spacecraft or satellite passes sufficiently close to a body to make detailed observations without orbiting or landing.