At a farm in Concord, Massachusetts, astronomers, sky watchers and others gathered in the dark on Tuesday night, hoping to spot something never seen before. "Comet Tsuchinshan-ATLAS is going to appear ...
New photos of comet Tsuchinshan-ATLAS appear to show a faint "anti-tail" pointing away in the wrong direction. The puzzling extra limb is the result of a rare illusion that is only possible when our ...