SIGHTING // TIMELINE_RECORD Flash sighting reported in Swarthmore, USA Event date 2010 Feb 22 Location Swarthmore, PA, USA Country United States Record summary blue-green explosions? light up sky in Swarthmore PA This timeline entry summarizes an external source. Follow the source link to review the underlying material and its context. Review primary source Open in interactive timeline Previous record Disk sighting reported in New York City (Manhattan), USA Next record Light sighting reported in Rochester, USA