"flyby." YourDictionary, n.d. Web. 16 January 2019. <https://www.yourdictionary.com/flyby>.
flyby. (n.d.). Retrieved January 16th, 2019, 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.