What happens if the largest known comet collides with Earth ...
2022年4月19日 · The recently discovered Oort cloud comet, Bernardinelli–Bernstein, has the largest known nucleus: 119 km. Here's what it could do to Earth.
Impact event - Wikipedia
Its meteor is the largest recorded object to have encountered the Earth since the Tunguska event. The Comet Shoemaker–Levy 9 impact provided the first direct observation of an extraterrestrial collision of Solar System objects, when the comet broke apart and collided with Jupiter in …
C/2014 UN271 (Bernardinelli–Bernstein) - Wikipedia
Size and color comparison of the largest known comets, including dwarf planet Pluto and natural satellites Mimas and Phobos for scale. C/2014 UN 271 is the second-largest known comet, being only behind 95P/Chiron.
Hubble Confirms Largest Comet Nucleus Ever Seen
2022年4月12日 · NASA’s Hubble Space Telescope has determined the size of the largest icy comet nucleus ever seen by astronomers. The estimated diameter is approximately 80 miles across, making it larger than the state of Rhode Island.
After 3.5 million-year hiatus, the largest comet ever ...
2021年10月1日 · An enormous comet — possibly the largest one ever detected — is barreling toward the inner solar system with an estimated arrival time of 10 years from now, according to new research published...
NASA Spots Biggest Comet Ever—500 Trillion Ton Ice Ball ...
2022年4月12日 · The biggest comet ever recorded has been spotted by the Hubble Space Telescope, NASA said Tuesday—and it is truly massive.
Behold: The biggest known comet in our solar system
2022年6月7日 · New data show that a comet discovered in 2014 is one for the record books. This frigid object, dubbed Bernardinelli-Bernstein, is the largest comet ever spotted. Comets are chunks of rock and ice that orbit the sun. Such “dirty snowballs” in space are often surrounded by clouds of gas and dust.