The world's most bizarre creatures series born from 2 alien objects?

A new study from Denmark has deepened the hypothesis of a bioburden 467 million years ago and a link between the two asteroid collisions.

The Ordovician bioburden event 467 million years ago was the largest increase in biodiversity ever recorded in Earth's history. Geological and fossil records reveal it is likely to be closely related to a period of Earth's cooling, an ice age that was caused by extraterrestrials.

An asteroid collision can release a lot of cosmic dust - (Image: NASA/JPL-Caltech).

Specifically, it was a collision between a giant asteroid, releasing a large amount of space dust that surrounded the Earth, blocking sunlight and causing cold weather. A study published in 2019 suggested that these were two large asteroids belonging to the asteroid belt between Mars and Jupiter, the collision was so large that the dust had traveled very far in the Solar System.

In the new study, a team of authors led by geologist Jan Audun Ramussen from the Mors Museum (Denmark) and geologist and paleontologist Nicolas Thibault from the University of Copenhagen (Denmark) found that the collision asteroid hits are real and have been shooting meteors down to Earth for a while, but it wasn't what triggered the bioburden event.

As a result of a thorough analysis of fossils from the seabed sediments at Steinsodden (Norway), preserved in limestone layers, they determined that the cooling of the Earth and the biological explosion originated every year. hundred thousand years before the asteroid impact. The beginning of the ice age was 469.2 million years ago and the climate continued to cool for the next 200,000 years, causing ice to begin to form in Antarctica (this continent was once a green continent in the past.

Speaking in Science Alert, the authors suggest that the cause of this ice age is a change in Earth's orbit - the ellipse becomes slightly more elongated - combined with a change in axial tilt, something that very often happens.

But that also doesn't mean alien dust doesn't affect Earth. Dr Rasmussen asserts that dust from the ancient collision not only did not trigger the biological explosion, but also became the brake for the evolution of species.

What gave birth to this series of bizarre, unique creatures of the period, remains a puzzle that needs further investigation.