Don't miss your last chance to get a good look at Comet A3 before it's gone for another 80,000 years
Comet A3 hasn't been past Earth since the Neanderthals. Your last chance to see it is approaching fast. Here's where and how ...
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‘Comet of the century’ seems to develop physics-defying second tail as it zooms past Earth
A3 though is seemingly led by a “physics-defying” anti-tail, Nasa noted last year. The rare phenomenon is caused by the Earth moving through the comet’s orbital plane, the American space ...