Comets such as Borisov, Atlas and Swan have been a good distraction in recent months, but one scientist warned that the spectacular space scene spout could also be a potential threat when it began to break down,media reported. Borisov was the first to be confirmed to have visited our interstellar comet, which was first discovered last August and began to split in early 2020 after orbiting the sun in December.
Around the same time, comet Atlas quickly brightens before splitting into debris. Then there’s Comet Swan, which has its core intact as it passes through our planet, but is likely to break up as it moves around the sun in the coming weeks.
All of this is good news for astronomers and other space geeks, but the relationship between Earth and comets is not always friendly and keeping them at a distance. Just ask the dinosaurs. Many believe the dinosaurs were wiped out by a giant comet that may have sparked a fire, a huge tsunami and enough particles to partially block the sun and make the Earth cold.
William Napier, from the Armagh Observatory in Northern Ireland, suggested in a paper published in June last year that catastrophic consequences on Earth may not require a direct impact on the comet. Debris from the flow of cometary debris alone could also greatly change life on our planet.
“Such an encounter could lead to the extinction of large animals 12,900 years ago and the sudden cooling of the climate, as well as the near-simultaneous collapse of civilization,” Napier wrote in the Royal Monthly Society of The Royal Notices of the Royal Monthly Society. “
In addition, he mentioned an earlier period known as the New Fairy Wood incident. At that time, the Earth suddenly changed from a warming trend to a sliding ice age. One hypothesis of climate mutations is that it is caused by an impact on a large comet or asteroid.
However, this theory is controversial and not widely accepted by scientists.