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3000th comet discovered by Solar and Heliospheric Observatory (SOHO)
On 13 September 2015, the ESA/NASA Solar and Heliospheric Observatory (SOHO) discovered its 3,000th comet, cementing its standing as the greatest comet finder of all time. The comet was spotted in SOHO’s data by Worachate Boonplod of Thailand — a citizen scientist typical of the NASA-funded Sungrazer Project volunteers responsible for 95 percent of SOHO comet discoveries.