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.
Happened as dated, per arstechnica.com: "…ty of adding crew members to the maiden launch of the Space Launch System (SLS) rocket. This seemed…"
The Register's November 9, 2017 report confirms NASA reconfirmed a December 2019 SLS launch target, closely matching the pin's stored date of November 30, 2019, though the piece's own headline hints at schedule uncertainty.
Spaceflight Now's April 28, 2017 report confirms NASA acknowledged the SLS's maiden flight would slip from November 2018 into 2019, an early prediction that predates but supports the pin's stored late-2019 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.
