BepiColombo Delivers First-Ever Infrared Glimpse of Mercury
For the first time ever, we have new infrared images of Mercury thanks to the ESA’s BepiColombo mission.
On 1 December 2024, BepiColombo, a joint mission between the European Space Agency (ESA) and Japan Aerospace Exploration Agency (JAXA), made its fifth flyby of Mercury. This flyby marked a historic moment as the spacecraft’s MERTIS instrument, an infrared spectrometer, became the first to capture images of Mercury in mid-infrared light.
Unlocking Mercury’s Secrets with Infrared Light
MERTIS’s unique capability to observe in mid-infrared light will revolutionize our understanding of Mercury. This wavelength range is particularly useful for identifying the types of minerals present on the planet’s surface. By analyzing these "molecular fingerprints," scientists can piece together the composition, mineralogy, and temperature variations across Mercury’s cratered landscape.
The images, presented in a captivating side-by-side comparison, highlight the Bashō impact crater, revealing its distinct characteristics in both visible and infrared light. This emphasizes the power of MERTIS in revealing new details hidden from traditional observations.
Challenges and Triumphs of Mid-Infrared Observations
Capturing these groundbreaking images was no small feat. The MERTIS instrument, designed to observe Mercury through its "planet port," faced an unexpected challenge during this stage of the mission. With the spacecraft’s components still stacked together, the planet port was unavailable. However, through ingenious reprogramming, scientists were able to utilize the "space port" to gather valuable data during the flyby, effectively testing the instrument capabilities and calibrating its performance.
A Glimpse into Mercury’s Future
The BepiColombo mission is much more than just a collection of impressive photos. It’s a comprehensive exploration of Mercury, designed to unravel the planet’s mysteries: its origin, evolution, and magnetic field. In late 2026, after a painstaking eight-year journey, BepiColombo will finally enter orbit around Mercury.
The journey into the heart of the solar system has only just begun. What secrets will BepiColombo reveal in the years to come?
**Ready to learn more about the BepiColombo mission? Visit ESA’s website for updates and
