dinosaur asteroid – pressnews

Asteroid dust caused 15-year winter that killed dinosaurs: study

31Oct

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Technology

Asteroid dust caused 15-year winter that killed dinosaurs: study

[ad_1] Around 66 million years ago, an asteroid bigger than Mount Everest smashed into Earth, killing off three quarters of all life on the planet -- including the dinosaurs.This much we know. But exactly how the impact of the asteroid Chicxulub caused all those animals to go extinct has remained a matter of debate. The leading theory recently has been that sulphur from the asteroid's impact -- or soot from global wildfires it sparked -- blocked out the sky and plunged the world into a long, dark winter, killing all but the lucky few.However research published Monday based on particles found at a key fossil site reasserted an earlier hypothesis: that the impact winter was caused by dust kicked up by the asteroid.Fine silicate dust from pulverised rock would have stayed in the atmosphere...

Punching an ASTEROID away! Earth turns Avenger for the Dinosaurs with NASA DART

13Oct

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Technology

Punching an ASTEROID away! Earth turns Avenger for the Dinosaurs with NASA DART

[ad_1] NASA gives confirmation that the DART mission was successful and the orbit of the asteroid Dimorphos has been altered. Earth may just avoid another dinosaur-extinction event. On September 26, NASA did the unthinkable. For the first time in history, humans were able to shake and move a celestial body. The NASA Double Asteroid Redirection Test (DART) mission sent a spacecraft to the asteroid called Dimorphos and struck it headfirst. The collision was supposed to move it away from its usual orbit. This test, if successful, could become a viable option to deflect any potential asteroid coming towards the Earth and avoid a future similar to the dinosaurs. And earlier this week, NASA finally confirmed that the mission was a success.Before the mission, NASA had set some tangible goals...

10 km wide asteroid strike that killed all the dinosaurs, triggered mega-earthquake: Study

8Oct

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Technology

10 km wide asteroid strike that killed all the dinosaurs, triggered mega-earthquake: Study

[ad_1] 66 million years ago, a 10-kilometre asteroid hit Earth, triggering the extinction of the dinosaurs. 66 million years ago, a 10-kilometre asteroid hit Earth, triggering the extinction of the dinosaurs. New evidence suggests that the Chicxulub impact also triggered an earthquake so massive that it shook the planet for weeks to months after the collision. The amount of energy released in this 'mega-earthquake' is estimated at 1023 joules, which is about 50,000 times more energy than was released in the magnitude 9.1 Sumatra earthquake in 2004.Hermann Bermudez will present evidence of this "mega-earthquake" at the upcoming GSA Connects meeting in Denver this Sunday, 9 October. Earlier this year, with support from a GSA Graduate Student Research Grant, Bermudez visited outcrops of...

Gigantic asteroid strike on Earth killed dinosaurs 66 mn years ago – Or did it really?

16Sep

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Technology

Gigantic asteroid strike on Earth killed dinosaurs 66 mn years ago – Or did it really?

[ad_1] A recent study has cast doubt upon the popular theory that an asteroid strike killed off dinosaurs. All the technology deployed in tracking and finding out details about asteroid strikes and impact on planets, especially Earth, are wrong? The most popular scientific theory says that 66 million years ago, an asteroid smashed into the Earth and caused the extinction of all dinosaurs. Top technological gadgets have been deployed to sift through the evidence to come to that conclusion. But is it really how things happened? A new study, shockingly, disagrees. According to it, asteroids had nothing to do with the demise of the dinosaur population. And contrary to popular belief, it was volcanic eruptions which contributed to...