#50000 years

Look up! Rare green comet will make its closest flyby of Earth tonight

Some reports say the comet, named C/2022 E3 (ZTF), could be bright enough to see with the naked eye, and definitely with a telescope or even binoculars.

Rare green comet commeth after 50,000 years; and it may never return again

The green comet was discovered by astronomers at the Palomar Observatory in San Diego County, Calif., and made its closest approach to the sun on Jan. 12.