A bright green comet is streaking across the sky right now. And it's bright enough that you may be able to see it with the naked eye on a dark night. Here's when and how to catch it:
The comet stands apart for its bright, aqua-green glow. It comprises “all kinds of exotic things,” from frozen carbon dioxide to frozen nitrogen, Beatty says. As the comet approaches the sun, it absorbs sunlight and gives off the striking green hue that distinguishes it among the stars.
The comet speedily mounts the northern sky this month as seen from latitude 45° north. Positions are shown for 11 p.m. CST. Remember to use binoculars as the comet will likely appear rather faint from light-polluted locations.
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