Mariner 10 Utilized a gravity assist maneuver all-around Venus to control its orbit around the Solar—this enabled it for making more than one flyby of Mercury. For the duration of its second flyby of your World on Oct 6, 2008, MESSENGER identified that Mercury's magnetic industry may be incredibly "leaky". https://apps.apple.com/de/app/merkur-spieleraum-online/id6477957809