قالب وردپرس درنا توس
Home https://server7.kproxy.com/servlet/redirect.srv/sruj/smyrwpoii/p2/ Science https://server7.kproxy.com/servlet/redirect.srv/sruj/smyrwpoii/p2/ Asteroid discovery: The asteroid collision & # 39; s larger than the dinosaur-killer & # 39; has brought new life | Science | News

Asteroid discovery: The asteroid collision & # 39; s larger than the dinosaur-killer & # 39; has brought new life | Science | News



The study was published in & # 39; Science Advances & # 39 ;, led by Birger Schmitz of Lund University in Sweden. The work suggests a distant asteroid collision that produced enough dust to trigger an ice age on Earth, approximately 470 million years ago. During this time, known as GOBE (the great Ordovician biodiversification event) has a marked increase in biodiversity, especially in marine life. dust enough to blanket the Earth and then dramatically cool the planet.

Birger Schmitz, who led the study, told The Observer: "We know about a 10km asteroid that fell to Earth 67 million years ago and killed dinosaurs, but this is a different event

"It occurred 470 million years ago when an asteroid 3,000 times larger than a dinosaur-killer was destroyed in a collision with another asteroid beyond Mars' orbit.

"It filled the solar system with dust and caused a huge staining of sunlight falling on the Earth."

READ MORE: Asteroid shock: Space rock collision triggered age at Earth [1

9659006] He added: "Sedim are the ents that are laid out at this time rich in helium-3 isotopes – where they can only take up space travel. This is an important clue. "

Scientist Rebecca Freeman, from the University of Kentucky, Lexington, supported the idea.

She told the journal & # 39; Science & # 39 ;:" There is no need to answer every question we have about Gobe, but it certainly comes together in many observations. "

Philipp Heck, author of the study, also said:" We have shown that what's happening in the solar system can have a big impact. influence on Earth. Extraterrestrial events are not always destructive. Many people think of meteorites as mere dinosaur killers, but we found the opposite.

To boost the mission, the agency's space provides UCF $ 19 million – even though hunting for the NEO will be difficult. [19659003] NASA is commissioned to find 90 percent asteroids ending in the world equal to or greater than 460 feet (140 meters) in 2020.

NASA administrator Jim Bridenstine warns the opportunities that have an impact are beyond what people realize.

NASA administrator said: "We need to make sure that people understand that it's not about Hollywood, it's not about movies.

" It's about finally protecting the only planet we know , now, to the host of life – and that's the planet Earth. "


Source link