A rare and historic event is set to unfold as Comet A3 (Tsuchinshan-ATLAS) makes a close pass by Earth, offering the potential to be seen with the naked eye. This comet, which was last spotted tens of thousands of years ago when Neanderthals roamed the planet, has captured the interest of astronomers and stargazers alike. Discovered in January last year, Comet A3 is believed to only visit the inner solar system once every 80,000 years, adding to the significance of this celestial sighting.
The Royal Astronomical Society (RAS) has described the anticipation surrounding Comet A3 as extraordinary, with some even dubbing it the “comet of the century”. While viewing the comet without aid is deemed unlikely, using a pair of binoculars is recommended to enhance the experience. Dr Robert Massey from the RAS expressed excitement about the comet potentially becoming a bright object in the night sky, suggesting that a telescope with a wide field may also provide a clearer view for observers.
Originating from the Oort Cloud, a vast collection of comets beyond the edges of the solar system, Comet A3 has already been visible in the southern hemisphere and is now making its way to the northern hemisphere for viewing. The best opportunity to witness Comet A3 is approaching, with the next window to observe it set between October 12 and 30. During this time, it is advised to look to the west just after sunset for a chance to catch a glimpse of this remarkable celestial event.
Dr Massey tempered expectations by noting that while Comet A3 is expected to be impressive, it may not reach the same level of visibility as past comets like NEOWISE in 2020 or Hale-Bopp in the late 1990s. Photography enthusiasts are encouraged to prepare their DSLR cameras for potential shots of the comet, while alternative options such as using a mobile phone camera with a small telescope could also yield favourable results.
As Comet A3 continues its journey through the solar system, astronomers and sky watchers are eagerly awaiting the unique opportunity to witness a spectacle that has been millennia in the making. The rarity and beauty of this cosmic event serve as a reminder of the wonders of the universe and the importance of cherishing such extraordinary moments.