Green comet visible to naked eye gets closest to Earth

C/2022 E3 (ZTF), also called the green comet, is getting closest to Earth, as reported by NASA, and several media outlets. The spectacular, green-shining comet is currently on its way through the northern sky and can become visible to the naked eye in the following days. It will be the brightest at its closest distance to Earth, on February 1, although it can only be spotted if the skies are clear and dark enough.

C/2022 E3 (ZTF), a long-period comet from the Oort cloud, was discovered by astronomers Frank Masci and Bryce Bolin, using the Zwicky Transient Facility in California, United States, on March 2, 2022. The bright green glow around the nucleus is due to the effect of sunlight on the comet's molecules, especially diatomic carbon, and cyanogen.

To observe the green comet, you will need a very clear and very dark sky (low humidity too), then look to the north, and search for a faint, greenish glow. Even in optimal conditions, it can be best observed with a telescope or binoculars, and far away from urban areas.

The comet is visible in all major astronomy applications, making it easier the spot it. Hanno Rein, an astrophysicist at the University of Toronto, developed a free application dedicated entirely to locating and tracking the green comet. The app is called Comet C/2022 E3 ZTF and can be downloaded from the Apple Store.

Featured image copyright: Dan Bartlett