Mercury's magnetic field is almost four billion years old, data from Nasa's Messenger probe has revealed. It orbited Mercury for four years before crashing into the planet last week.
The discovery will help scientists piece together the history of Mercury, the planet closest to the Sun and one about which we knew very little before the Messenger mission.
"The science from these recent observations is really interesting and what we have learned about the magnetic field is just the first part of it," said Catherine Johnson, planetary scientist from University of British Columbia and lead author of the study.
Nasa's Messenger Probe Revealed Secrets About Mercury's Magnetic Field | NDTV Gadgets
