Tag Archives: Comet

A green visitor is going to make its closest approach to Earth this week. Comet C/2022 E3 (ZTF) is visible in binoculars or a telescope from Canada and depending on what happens in the coming days, it may enter naked-eye visibility. Comets are notoriously difficult to predict, however, as luminosity (inherent brightness) depends on factors such as how much gas and dust streams off their surfaces, …