The total mass loss rate and outflow speed from its 3I/Atlas surface was used to infer its mass. The mass of 3I/ATLAS must be ...

According to Harvard astrophysicist Avi Loeb, the comet 3I/ATLAS likely weighs over 33 billion tons. This startling estimate was derived from an analysis of the object's trajectory, where Loeb ...

Hubble Space Telescope observations have provided size estimates for the nucleus of interstellar comet 3I/ATLAS, ranging from 320 meters to 5.6 kilometers in diameter, though the nucleus itself ...

Ever since the comet 3I/Atlas was spotted, it has sparked curiosity—not just from astronomers and physicists, but from anyone ...

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.

During its 4.5-billion-year life span, Earth’s been hit by countless asteroids. (Despite Jupiter’s noble attempts at defending it.) But while it’s easy to imagine the damage they’ve done, just how big ...

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 ...

A massive comet, which has earned itself the nickname "Devil Comet," is charging towards Earth after an "erratic" outburst earlier this year. The comet, officially names 12P/Pons-Brooks, has ...

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 — ...

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 ...