BepiColombo mission observes solar particle impact on Mercury

• The BepiColombo mission successfully measured how high-energy solar particles penetrate Mercury's magnetic field and interact with its surface.
• Data collected during a September 2024 flyby provides critical insights into planetary defense mechanisms against extreme space weather.

Scientific Findings

• During the mission's fourth flyby, the spacecraft passed within 165 km of Mercury's surface.
• The Solar Intensity X-ray and Particles Spectrometer (SIXS) detected a significant influx of solar charged particles during a solar eruption.
• These particles hit the surface over a wide area, interacting with atoms and molecules to generate X-rays.

Implications for Earth

• Mercury’s environment during this event serves as a model for how solar storms compress magnetospheres.
• Researchers use these findings to model how intense radiation might affect Earth's near-space environment and atmosphere during severe solar events.
• Insights gained will support the Center of Excellence in Space Resilience in protecting commercial and scientific operations in Low Earth Orbit (LEO) from solar storm damage.

Mission Status

• The BepiColombo probe, a joint ESA/JAXA project, has completed six flybys since launch.
• The Mercury Planetary Orbiter (MPO) and Mercury Magnetospheric Orbiter (Mio) are scheduled to enter orbit around Mercury in November 2024.