These researchers propose that it was the remains of a comet and not an asteroid that wiped out the dinosaurs
For years researchers from different branches of science have sought to determine what exactly killed off the dinosaurs. Theories have been quite a few, though the most plausible of all is the impact of an object from outside the Earth. An asteroid? That’s what has always been thought, but Harvard researchers now say it was actually the remains of a comet.
The origin of the end of the dinosaurs appears to be in the impact of an asteroid. A perfectly lethal impact according to research caused it to be released a huge amount of tons of sulfur. This consequently modified the earth’s atmosphere and climate for a good season, thus causing the extinction of dinosaurs that were unable to adapt to the change.
From the Oort Cloud to Mexico
The impact of this asteroid occurred 66 million years ago in Mexico, in the Chicxulub crater. The main theory suggests that the object that struck came from the asteroid belt between Mars and Jupiter. An asteroid that, due to its orbit, Earth’s gravitational pull and other factors, ended up impacting Mexico. Now, a team of Harvard researchers says that actually it was neither an asteroid nor did it come from the asteroid belt between Mars and Jupiter.
As reported in a Harvard Gazette publicationThe object that hit the Earth was actually a piece of a larger one. After simulations and analysis of the remains found in the Chicxulub crater, they believe that it was the remains of a comet. A comet that came from the Oort Cloud, on the outskirts of the Solar System.
The simulations carried out contemplate the possibility that at some point a comet from the Oort Cloud its trajectory was affected by the gravity of the Sun. This trajectory was also influenced by Jupiter, which modified its orbit to pass close to Earth and cause the catastrophic impact.
Of course, they believe that it was not the entire comet that ended up on Earth, but only a piece. Comets, due to the influence of the Sun, lose parts as they orbit the Sun. They believe that one of these parts, about 80 kilometers in diameter, is the one that ended up on Earth causing a crater about 20 kilometers deep.
What happened after the impact we have already studied more. Tsunamis, fires, soot in the atmosphere, changes in precipitation … a series of natural catastrophes that ended up causing extinction of the great creatures of the planet. A change of era.