The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
Date has moved, per en.wikipedia.org: "…propulsion system, Mercury arrival was delayed to November 2026.[10] Overview The mission involves…"
ESA's[3][4] own mission-operations update confirms the "critical Mercury orbit insertion maneuver" is set for "November 21, 2026," corroborating the factsheet's date after the spacecraft's solar-electric propulsion shutdown.
ESA's[2][4] own factsheet states "MPO+Mio enter Mercury orbit: 21 November 2026," an exact match to the pin's stored date.
ESA's[2][3] report on the fourth Mercury flyby (published 2 September 2024) explains arrival "has been postponed from December 2025 to November 2026" due to a thruster malfunction, giving the origin of the pin's delayed, stored date.
Something missing or wrong? Say it in your own words: a link that backs this pin up, a different start or end date and why, or a fact it lacks or gets wrong. The AI checks it against this pin's sources, searches for better ones, and adds any page that backs you up. The pin's own sources still count most.