Astronomers have detected the largest comet ever recorded in the solar system — Bernardinelli-Bernstein, a colossal 100-kilometer-wide space giant, currently traveling toward the sun from the distant ...

The dust trail from the largest comet outburst ever seen will grace the skies this summer — and it's going to look like a giant hourglass. The night show will come courtesy of comet 17P/Holmes ...

New observations by Hubble of the largest comet ever found are confirming its status as a titan of icy space objects. Comet C/2014 UN271 measures about 74 miles across, according to updated data ...

[Related: The biggest comet ever found is cruising through our solar system’s far reaches] This happens with such regularity that Mark Twain, born in 1835, wrote that he “came in with Halley ...

Still, even overestimating its size does mean it’s still a whopping big comet! But Halley, for the record, is just about the same size, some 9.3 miles (15 km) on its longest side — and we know ...

I had no service at Pinnacles, so I couldn't Google it. I knew the general area where the comet was supposed to be, but not how big or small that area was. So I scanned far and wide around Capella ...