ESTIMATEDDate confidence: ESTIMATEDA target, not a fixed dateHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all ESTIMATED pins62% CONFIDENCEOverall confidence: 62%How well the pin's source and references back up its dates.Weighted average of how firmly 3 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins from 50% to 74% confidence
Given as a target, not a fixed date, per the pin description: "…as the world's largest radio telescope. Estimated date.…"Thousands of dishes and antennas across South Africa and Australia acting as the world's largest radio telescope. Estimated date.
≈$2B
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