Your once-in-a-lifetime chance to see a green comet named C/2021 A1 — a.k.a. Leonard — is here. Astronomy experts, including the comet’s discoverer, offer tips on when and how to see the comet.
What is Comet C/2021 A1?
Like other comets, Leonard is a ball of frozen gas, rocks and dust. When its orbit brings it close to the sun, the heat causes some of that material to vapourize, which makes it glow and sprout a tail of gas and dust.
Why is this comet causing so much excitement?
While many comets pass through our solar system, few come close enough to the sun or the
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