Win a trip to ESA to witness BepiColombo arrive at Mercury

Get ready to celebrate BepiColombo ’s arrival at Mercury. Craft a welcoming message that could be a drawing, song, poem or any other art form and stand a chance to win a trip to mission control! ENTRY FORM Full rules and how to enter below. The institutional report frames the development in practical terms and ties it to the broader mission or observing effort.

The significance lies in astronomy does not advance on single detections. The field builds confidence by accumulating independent observations across different wavelengths, instruments and epochs until isolated signals become defensible conclusions. What looks convincing in one dataset can dissolve when a second instrument looks at the same target, and what looks marginal can solidify when follow-up campaigns confirm the original reading. The current standard requires that a result survive this triangulation before the community treats it as settled. The ESA/JAXA BepiColombo mission has entered its Mercury arrival phase, after cruising towards the planet for the past eight years. They had to navigate a complex journey, including nine planetary flybys, one flight past Earth, two past Venus and six past Mercury itself.

Earlier this month, the mission started performing a series of critical steps that will bring the two orbiters, MPO and Mio, into their science orbits over the next few months. You stand a chance to win a trip to an event happening on 9 December in Darmstadt, Germany, at ESA’s Space Operations Centre.

You will get a chance to meet the teams behind BepiColombo and experience the tense moment of receiving the first signal from the spacecraft once they have separated. On 3 September, MTM, which powered and steered BepiColombo for most of the journey, released the two orbiters and bade them farewell.

On 21 November, MPO and Mio, still joined together, will be captured by Mercury’s gravity. Mio will have entered its science operation orbit at this stage.

What gives the story weight is not just the object itself, but the way the measurement trims the range of plausible physical explanations. Astronomy has accumulated enough cases to know that the most interesting results are rarely the ones that confirm expectations cleanly; they are the ones that confirm some expectations while complicating others, or that open a parameter space that previous instruments could not reach. The scientific community evaluates these contributions by asking whether the new data constrain a model in a way that older data could not, and whether those constraints survive systematic review.

On 19 March 2027, MPO will also reach its final science orbit. Share your creation on a social media channel of your choice using the hashtag #WelcomeToMercury and explain to your community what the BepiColombo mission means to you or what.

Because the account originates with ESA Space Science, it functions best as a primary institutional report that is close to the data and operations, not as independent scientific validation. Institutional communications are produced by organizations with legitimate interests in presenting their work in a favorable light, which does not make them unreliable but does make them partial. Details that complicate the narrative, including instrument limitations, unexpected failures and results below projections, tend to be minimized relative to progress messages. Technical documentation and peer-reviewed publications, where they exist, provide the complementary layer that institutional releases cannot substitute.

The next step is to see whether other instruments and other wavelengths tell the same story. Campaigns with JWST, the VLT, the forthcoming Extremely Large Telescopes and radio arrays will provide the spectral coverage and spatial resolution needed to move from detection to physical characterization. The timeline for that kind of confirmation is typically measured in years, not months, which is worth keeping in mind when reading the current result.

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