On 2023-06-29, an official collaboration between Mobile Suit Gundam the Witch from Mercury and the JAXA's "MIO" (みお?) Mercury Magnetospheric Orbiter (MMO) was launched. A video of Suletta Mercury and Miorine Rembran's voice actresses supporting "MIO" was produced, and an illustration featuring the characters with it was also released [MMO 2].
MIO was launched together with ESA's Mercury Planetary Orbiter (MPO) in 2018 aboard an Ariane 5 rocket as part of the European and Japanese space agencies' joint BepiColombo program [MMO 1], (as referenced in the novel Cradle Planet).