Asteroid Impact and Mass Extinction About 66 million years ago, a massive asteroid, known as the Chicxulub impactor, crashed into what is now the Yucatán Peninsula in Mexico. Measuring between 10 and 15 kilome
The estimated size of the asteroid would put it roughly on par withasteroid Bennu, the target ofOSIRIS-REx, the UArizona-ledNASAasteroid sample return mission. According to Bray’s calculations, the energy released from the impact that caused the Nadir crater would have been around...
“The asteroid impact that formed the Chicxulub crater on the Yucatan Peninsula in Mexico, where this research was carried out, is thought to be the cause of the late Cretaceous Period mass extinction event which led to 76 percent of all plant and animal species world-wide, including all non...
On its own, the dinosaur-killing asteroid had a staggering impact: Wildfires raged across the continents, tsunamis pummeled coastlines and about three-quarters of Earth’s species went extinct. But now, new evidence suggests this massive chunk of rock may have had...
The researchers said the findings suggest that large craterscan be formed in a matter or minutes. 研究人员表示,这些发现表明大型陨石坑可以在几分钟内形成。 Scientists continue to question how some living things wereable to survive the asteroid event. ...
An artist's depiction of the dinosaur-killing asteroid, which left a 124-mile-wide crater in the planet's surface. (Image credit: Andrzej Wojcicki via Getty Images) Hidden below the waters of the Gulf of Mexico, the Chicxulub crater marks the impact site of an asteroid that struck Earth...
Dino-killing asteroid: How big was it? This NASA graphic shows the location of the Chicxulub crater from the asteroid impact that doomed the dinosaurs.(Image credit: NASA/JPL-Caltech/David Fuchs/Wikimedia Commons) The dimensions of Chicxulub Crater — about 90 miles wide by 12 miles (20 ...
When the dinosaur-killing asteroid collided with Earth more than 65 million years ago, it did not go gently into that good night. Rather, it blasted a nearly mile-high tsunami through the Gulf of Mexico that caused chaos throughout the world's oceans, new research finds. The 9-mile-across...
was created when a massive asteroid struck the planet 66 million years ago and brought a calamitous end to the reign of dinosaurs. Now, thanks to a new analysis of core samples taken from the crater’s inner ring of mountains, called a peak ring, geologists can create...
But scientists have also found lots of soot in the geologic layers deposited immediately after the asteroid impact. 但科学家们也在小行星撞击后立刻沉积的地质层中发现了大量煤烟。 And the soot may have been part of the killing...