Stargazers have a rare opportunity to catch a glimpse of Comet A3, also known as Tsuchinshan-ATLAS, as it streaks across the skies this weekend. The comet, last seen from Earth around 80,000 years ago when Neanderthals roamed the lands, is making a visible appearance in the northern hemisphere after being spotted last year. With its brightness and visibility earning it the title of “comet of the century” by the Royal Astronomical Society (RAS), Comet A3 is creating excitement among astronomy enthusiasts.
According to astronomers, the comet is expected to be visible to the naked eye from October 12 to 30, offering a stunning sight for skywatchers. Dr Robert Massey, deputy director of the RAS, mentioned the possibility of capturing photos of the comet, particularly using a digital single-lens reflex (DSLR) camera. Comet A3 originates from the Oort Cloud, a vast region containing numerous celestial objects like comets, surrounding our solar system.
Initially observed in February 2023, the comet was named C/2023 A3 when its orbit indicated a close approach to both the Sun and Earth in September/October 2024, making it visible without optical aids. Described as a second magnitude bright star, Comet A3 has been visible to observers in the southern hemisphere and is now ascending into the northern hemisphere’s evening sky, promising an exquisite celestial display.
The anticipated viewing dates for spectators in the UK and the USA are October 12 to 14, primarily in the early evening when the comet will be most visible towards the western horizon after sunset. The comet, while at its closest point to Earth – 44 million miles away – is expected to exhibit a significant tail that could span up to 30 degrees in length. Sky gazers are encouraged to act swiftly as the comet will fade from view around 30 minutes post-sunset.
Weather conditions permitting, observers are in for a potential spectacle with Comet A3’s bright tail illuminating the sky. The comet’s exact brightness remains uncertain until its arrival, keeping enthusiasts eager to witness the celestial phenomenon. The opportunity to view the comet with binoculars or telescopes offers a unique experience to appreciate the beauty of this rare cosmic visitor.
For astronomy enthusiasts and casual observers alike, Comet A3 presents a captivating celestial event not to be missed. As the comet graces our skies for this brief period, it provides a remarkable reminder of the wonders of the universe and the fleeting nature of such cosmic displays.