Comet likely last seen when Neanderthals walked Earth could soon dazzle in the night sky
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A recently discovered comet, known as C/2023 A3 Tsuchinshan–ATLAS, will make its closest approach of Earth on Saturday. Sky-gazers won’t want to miss the event since it may be the last time the comet will be seen in the night sky for another 80,000 years.

The comet successfully reached perihelion, its closest point to the sun in its orbital path around the parent star, on September 27, and was visible for those in the Southern Hemisphere in September and early October. Now, the icy body is on its way out of the inner solar system and will be visible to those in the Northern Hemisphere in mid-October through early November, according to NASA.

On Saturday, the comet will come within about 44 million miles (nearly 71 million kilometers) of Earth. The comet is making its first documented flyby of our planet, according to NASA. With its 80,000-year orbit, the celestial body would have been last seen from Earth at the time of the Neanderthals.
Those looking to catch a glimpse of the once-in-a-lifetime event will want to look in the western part of the night sky, shortly after sunset, according to EarthSky.

The comet will look like a bright fireball in the dark sky with a long, extended tail. Bill Cooke, lead of NASA’s Meteoroid Environment Office at the Marshall Space Flight Center in Huntsville, Alabama, recommends a pair of binoculars for enhanced viewing of the comet.

“It’s not going to zing across the sky like a meteor. It will just appear to hang there, and it will slowly change position from night to night,” Cooke said. “If you can see (the comet) with your unaided eye, (using) the binoculars will knock your socks off.”