The findings seem to disprove a long-standing theory thatthe asteroid moved toward Earth from the southeast. 这些发现似乎驳斥了长期存在的一种理论,即小行星是从东南方向向地球移动的。 The scientists said recreations based on the crater'sstructure showed the asteroid coming from the southwest. 科学家...
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...
The place where the asteroid hit Earth is called the Chicxulub Crater, and scientists have been studying that area to try to learn more about the impact event that altered the course of life on Earth. An upcoming BBC documentary called “The Day The Dinosaurs Died,” focuses on what happene...
This artist's rendering shows the Chicxulub crater at the time of the meteorite's impact. Credit: NASA (PhysOrg.com) -- The enduringly popular theory that the Chicxulub crater holds the clue to the demise of the dinosaurs, along with some 65 percent of all species 65 million years ago,...
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...
NASA scientist: Earth is overdue for a dinosaur-killing asteroid strike, and we're woefully unprepared The crater was left when an iron asteroid 1.5 kilometers across slammed into Earth, possibly within the past 100,000 years. Though not as cataclysmic as the dinosaur-killing Chicxulub impact,...
they suck living creatures back into the ocean. When the asteroid strikes, its impact sends 25 trillion tons of earth at speeds exceeding Earth’s escape velocity. Most of the debris returned back to Earth. The rocks and boulders come back killing or injuring all wildlife they strike. As the...
Perhaps the biggest support for this hypothesis is the Chicxulub crater. This is a massive asteroid crater off the coast of the Yucatán Peninsula. Based on measurements of sediments and analysis of the surrounding rock, scientists estimate that the asteroid that caused the crater was between 8.7...
As JURASSIC WORLD roars in theaters, scientists again debate whether dinosaurs were killed by an asteroid or by volcanos The current film hitJurassic World, like the three dinosaur thrillers before it, involves killing a lot of dinosaurs running amuck on an isolated island. Ignoring Lewis Carroll...
The great smashup is known as the Cretaceous-Tertiary extinction. It occurred when an object, believed to be an asteroid some 10 kilometres (six miles) wide, whacked into the Yucatan peninsula in modern-day Mexico. It left a crater 180 kilometres (110 miles) wide, ignited a firestorm and ...