After almost eight years and billions of kilometers of journey, BepiColombo — a science mission led by ESA in shut collaboration with JAXA — has begun its long-awaited arrival on the smallest and innermost planet in our Photo voltaic System.
An artist’s impression of the ESA/JAXA BepiColombo spacecraft in cruise configuration, with Mercury within the background. On its 7.2 12 months journey to the innermost planet, BepiColombo will fly by Earth as soon as, Venus twice and Mercury six occasions earlier than getting into into orbit. The MTM module is proven with ion thrusters firing, and with its photo voltaic wings prolonged, spanning about 100 ft (30 m) from tip-to-tip. The 24.6-foot (7.5 m) lengthy photo voltaic array of the MPO orbiter within the center is seen extending to the highest. The Mio orbiter is hidden contained in the sunshield on this orientation. Picture credit score: ESA / ATG Medialab / NASA / JPL.
BepiColombo blasted off from Europe’s Spaceport in Kourou, French Guiana, on October 20, 2018.
It’s the first European mission to Mercury and is the primary to ship two spacecraft to make complementary measurements of the planet and its dynamic atmosphere on the similar time.
It consists of two particular person orbiters: ESA’s Mercury Planetary Orbiter (MPO) and JAXA’s Mercury Magnetospheric Orbiter (MMO, or ‘Mio’).
BepiColombo is named after the Italian mathematician and engineer Giuseppe (Bepi) Colombo.
Professor Colombo was the primary to see that an unsuspected resonance is chargeable for Mercury’s behavior of rotating on its axis thrice for each two revolutions it makes across the Solar.
He additionally prompt to NASA how one can use a gravity-assist swing-by of Venus to put the Mariner 10 spacecraft in a photo voltaic orbit that will enable it to fly by Mercury thrice in 1974-5.
On September 3, 2026, mission controllers confirmed that the spacecraft’s Mercury Switch Module (MTM) efficiently separated from the remainder of the stack, kicking off the mission’s ‘arrival section.’
Affirmation got here through two of ESA’s deep-space monitoring antennas in Spain and Argentina, which picked up alerts validating the separation.
Telemetry confirmed all programs functioning usually, with MPO’s photo voltaic panels already charging the spacecraft’s batteries.
The maneuver was a high-stakes one: it happened greater than 200 million kilometers from Earth, a distance that dominated out any real-time troubleshooting and demanded exhaustive advance planning from mission groups.
With the switch module gone, MPO and Mio orbiters at the moment are headed towards orbit insertion at Mercury, with MPO powering the joined spacecraft till the 2 orbiters separate from one another.
“The arrival section begins with the separation of MTM from the spacecraft stack on September 3, 2026,” members of the BepiColombo crew mentioned in a press release.
“The composite spacecraft will enter orbit round Mercury on November 21, 2026, and MPO and Mio will separate from one another on December 9-10, 2026.”
“The mission’s science section is about to start in April 2027.”
