https://www.sciencenews.org/archive/periodic-comets-return-spotted-western-sky
Periodic Comet's Return Spotted in Western Sky | Science News
periodic cometspotted insky sciencereturnwestern
https://www.wikidata.org/wiki/Q11416914
periodic comet - Wikidata
comet with a stable orbit that is shorter than 200 years
periodic cometwikidata