Christopher Becke, a high school physics teacher, made this outstanding size comparison showing what the Comet 67P/Churyumov–Gerasimenko would look like next to famous spacecrafts from science fiction ...

NASA's Hubble Space Telescope has calculated the size of a massive comet nucleus observed last year, and it's the largest ever spotted, measuring 80 miles across —about twice the width of Rhode Island ...

This diagram compares the size of the icy, solid nucleus of comet C/2014 UN271 (Bernardinelli-Bernstein) to several other comets. The majority of comet nuclei observed are smaller than Halley’s comet.

It's possibly as big as Manhattan, likely older than our own solar system, and it's traveling through space at speeds of up ...

Is the viral 3I/Atlas leaked photo real or fake? A clear fact check on its origin, what NASA data show, why basic optics say no, and how social media fueled the debate.

A comet known as the "Devil Comet," twice the size of Mount Everest, is currently approaching Earth. This comet, scientifically labeled as 12P/Pons-Brooks, is a periodic comet with an orbital period ...

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, and ...

A volcanic comet the size of a small city exploded as it headed toward the sun, emitting a cloud of ice and gas that looks like a gigantic pair of horns, astronomers said. The comet, called ...

UNDATED (WKRC) - A comet twice the size of Mount Everest will be passing the Earth, according to scientists. While the comet, called Comet C/2017 K2 (PanSTARRS), will not strike the planet, star ...

Yale astronomers have taken a new, close-up image of the interstellar comet 2l/Borisov. 2l/Borisov, first spotted this summer, continues to draw nearer to Earth and will reach its closest approach — ...

In this week's Science for All newsletter, Vasudevan Mukunth explains latest updates on interstellar comet 3I/ATLAS, and what ...