The comet known as Tsuchinshan-ATLAS, or Comet A3, has not been seen for over 80,000 years and is slated to be visible from Earth during two distinct periods in the coming month. This long-period comet was first observable beginning on September 27 and will be visible until just before sunrise on October 2, where it is anticipated to appear like a fuzzy ball with a trailing tail.

Minjae Kim, an astronomy expert at the University of Warwick, explained that Comet C/2023 A3 possesses an orbital lifespan of around 80,000 years. This extensive orbit contributes to its unpredictable nature, which can lead to variations in brightness and tail characteristics as it draws nearer to the sun. If the current predictions prove accurate, the comet might be observed with the naked eye, resembling a fuzzy star with an elongated tail; however, using binoculars or a small telescope could provide a clearer view of its features.

September 27 also marked the perihelion, or the point at which the comet was closest to the sun. After this, it will commence its journey back into the outer regions of the solar system. A subsequent opportunity for viewing, potentially offering improved visibility, is anticipated in mid-October, contingent on the comet surviving its trek around the sun since many comets tend to disintegrate closer to solar heat.

Should Comet A3 endure its passage, it is expected to be most visible to the naked eye around October 12 to October 20, coinciding with its closest approach to Earth. Each night following this period, the comet will rise higher in the sky until it eventually disappears, marking the end of its visible presence for another 80,000 years. Starwalk, an app designed for stargazers, has dubbed this comet the "most anticipated comet of the year.