The Green Comet will be closest to earth on Feb 1. Here's the science behind its ghoulish glow
Comet ZTF, as photographed on January 18, 2023. Dan Bartlett A green comet is whizzing past the earth for the first time since the ice age. The comet's head shines green, while its tail shines white. Scientists found out why it glows this way in 2021, and it comes down to physics. Here's how it…
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