Its tail always points away from the sun, so it might be more visible on Earth at some parts of its orbit than at others. It will not be around for long, so the geometry of it, versus Earth, versus the Sun has changed a lot since two weeks ago.swampwiz said:
The green comet, often referred to as Comet C/2022 E3 (ZTF), is a comet that was discovered in early 2022. It's known for its greenish hue, which is caused by the presence of diatomic carbon (C2) that emits green light when it is excited by the ultraviolet radiation from the Sun.
The green comet appears as a weak smudge now because it is moving away from the Earth and the Sun. As it travels farther into the outer regions of the solar system, it receives less sunlight, causing its brightness to diminish significantly. Additionally, the comet's material is dispersing, making it less dense and more diffuse.
Yes, the green comet can still be observed through telescopes, but it requires more powerful equipment due to its reduced brightness. Amateur astronomers with high-quality telescopes and clear, dark skies may still be able to spot the comet, but it will appear as a faint, diffuse object.
The green color of the comet is primarily caused by the presence of diatomic carbon (C2) in its coma, the cloud of gas and dust surrounding its nucleus. When diatomic carbon is exposed to the ultraviolet light from the Sun, it becomes excited and emits green light, giving the comet its distinctive hue.
Comets with a greenish hue are not extremely rare, but they are not very common either. The green color is relatively unusual and is a result of specific chemical compositions in the comet's coma. While there are many comets that pass through the inner solar system, only a few exhibit this distinct green coloration.