A bright green comet is a rare cosmic “messenger,” say astronomers

A bright green comet is a rare cosmic “messenger,” say astronomers

A bright green comet is a rare cosmic “messenger,” say astronomers

A comet that has not been seen from Earth for tens of thousands of years is visible in the sky this month.

Comet C/2022 E3 (ZTF) was discovered on March 2, 2022 by astronomers Frank Masci and Bryce Bolin using the Zwicky Transient Facility (ZTF) at Palomar Observatory in California. At the time, the comet was just in Jupiter’s orbit, about 399 million miles (643 million km) from the sun. Fast forward, and the comet has already appeared closest to the sun and in a few weeks it will approach Earth on February 1.

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