Citizen Scientist Discovers Sun-Watcher SoHo’s 4000th Comet

Using data from the ESA/NASA Solar and Heliospheric Observatory, or SOHO, a European citizen scientist spotted a never-before-seen comet in the satellite data — the 4,000th comet discovery in the spacecraft’s 25-year history. Currently nicknamed SOHO-4000 and pending its official designation from the Minor Planet Center, the comet has a rather small nucleus, estimated around five to ten meters in size, and it was extremely faint and close to the Sun when discovered. This means SOHO is the only observatory