How to check out the rare comet flying over San Antonio mySAA rare comet last visible from Earth 80,000 years ago makes a return visit Colorado Public RadioNorthern Californians can see this rare comet that won't return for 80,000 years CBS NewsBright Comet Tsuchinshan-ATLAS Climbs into Evening View Sky & TelescopeStriking photos show stunning, once-in-a-lifetime comet soaring over US USA TODAY