Pic shows rare green comet passing by Earth after 50,000 years

A green comet named Comet C/2022 E3 (ZTF), which last passed by Earth about 50,000 years ago, was visible from Spain on Wednesday. "The brightness of comets is notoriously unpredictable, but by February 1, the green comet could become only just visible to the eye in dark night skies," NASA had earlier said.