The BepiColombo spacecraft made the "closest flyby of a planet ever" when it flew by Mercury, according to ESA. See time-lapsed imagery of the flyby shot.
Credit: ESA/BepiColombo/MTM ACKNOWLEDGEMENTS Image processing and video production by Mark McCaughrean LICENCE [CC BY-SA 3.0 IGO](Creative Commons/licenses/by-sa/3.0/igo/) or [ESA Standard Licence]