‘Green comet’ can be seen by the naked eye
A long-period comet that hasn’t been near Earth for 50,000 years is now visible with the naked eye. The comet known as C/2022 E3 (ZTF) is a dazzling green color chiefly because of the presence of the gaseous inorganic chemical diatomic carbon. It’s arriving after a long journey from the Oort cloud,…