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Rare illusion gives ‘once-in-a-lifetime’ comet a seemingly impossible 2nd tail after closest approach to Earth for 80,000 years

The “once-in-a-lifetime” comet Tsuchinshan-ATLAS looks like it has grown a physics-defying second tail after reaching its closest point to Earth for more than 80,000 years, new photos reveal. However, in reality, the extra limb is a visual illusion that occurs thanks to the position of our planet relative to the naked-eye object. C/2023 A3, more […]