The 3I/ATLAS threw off over 13.5 million metric tons of water in the month after perihelion, a plume so large that it caused ...

Two bright green comets are streaming through the skies and are visible to skygazers in the Northern Hemisphere. Both hail from the outer edges of our solar system — possibly what's known as the Oort ...

"The reason for 3I’s rapid brightening, which far exceeds the brightening rate of most Oort cloud comets at similar distances, remains unclear." When you purchase through links on our site, we may ...

Ernest Opik, an Estonian astronomer based at the Astronomical Observatory in Tartu from 1921-1944, commenced research on the frequencies and speeds of meteors and comets in the 1920s. In 1932, Opik ...