BepiColombo

A new analysis combining data from NASA’s MESSENGER mission and the European BepiColombo probe shows Mercury is shrinking far faster than scientists had previously believed, with global contraction leaving visible fault scarps across the planet’s surface. Researchers say the rate of cooling and contraction carries major implications for understanding the thermal evolution of small rocky planets, the durability of their magnetic fields, and the broader geological history of the inner solar system. The findings also raise fresh questions about how Mercury has retained a magnetic field despite being a small planet with a slowly solidifying inner core, a long-standing puzzle in comparative planetology.

Core Summary The European Space Agency (ESA) and Japan Aerospace Exploration Agency (JAXA) collaborative BepiColombo mission has successfully entered Mercury’s orbit after 8 years and traveling over 9 billion kilometers. This marks humanity’s first systematic scientific exploration of Mercury and represents a major breakthrough in deep space exploration technology. Event Details According to Ars Technica, the BepiColombo probe was launched in 2018 and used multiple gravity assists to gradually adjust its trajectory before finally reaching the innermost planet of our solar system. The mission consists of two orbiters: Europe’s Mercury Planetary Orbiter (MPO) and Japan’s Mercury Magnetospheric Orbiter (MMO), which will conduct one year of scientific observations of Mercury’s surface and magnetic environment respectively. ...