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  2. Alvarez hypothesis - Wikipedia

    en.wikipedia.org/wiki/Alvarez_hypothesis

    Luis Walter Alvarez, left, and his son Walter, right, at the K–T Boundary in Gubbio, Italy, 1981. The Alvarez hypothesis posits that the mass extinction of the non-avian dinosaurs and many other living things during the Cretaceous–Paleogene extinction event was caused by the impact of a large asteroid on the Earth.

  3. Chicxulub crater - Wikipedia

    en.wikipedia.org/wiki/Chicxulub_crater

    Artist's impression of the asteroid slamming into tropical, shallow seas of the sulfur-rich Yucatán Peninsula in what is today Southeast Mexico. [13] The aftermath of the asteroid collision, which occurred approximately 66 million years ago, is believed to have caused the mass extinction of non-avian dinosaurs and many other species on Earth. [13]

  4. Scientists think they've found the origin of the asteroid ...

    www.aol.com/scientists-think-theyve-found-origin...

    The asteroid that killed most dinosaurs 66 million years ago left behind traces of its own origin. Researchers think they know where the Chicxulub impactor came from based on levels of ruthenium.

  5. Asteroid that doomed the dinosaurs halted a key process for ...

    www.aol.com/asteroid-doomed-dinosaurs-halted-key...

    Fine dust thrown up into Earth’s atmosphere after an asteroid strike 66 million years ago blocked the sun to an extent that plants were unable to photosynthesize, a new study has found.

  6. Tanis (fossil site) - Wikipedia

    en.wikipedia.org/wiki/Tanis_(fossil_site)

    Uniquely, Tanis appears to record in detail, extensive evidence of the direct effects of the giant Chicxulub asteroid impact which struck the Gulf of Mexico 66.043 million years ago, and wiped out all non-avian dinosaurs and many other species (the so-called "K–Pg" or "K–T" extinction).

  7. Scientists believe they have finally uncovered what killed ...

    www.aol.com/news/scientists-believe-finally...

    The study shows that the asteroid, while having a severe initial impact, did not immediately kill off the dinosaurs - instead slowly killing them off over a few years.

  8. After 66 million years, scientists discover there wasn’t just ...

    www.aol.com/news/66-million-years-scientists...

    A six-mile-long asteroid, which struck Earth 66 million years ago, wiped out the dinosaurs and more than half of all life on Earth.The impact left a 124-mile-wide crater underneath the Gulf of ...

  9. Global catastrophe scenarios - Wikipedia

    en.wikipedia.org/wiki/Global_catastrophe_scenarios

    A notable example is the K-T extinction event, which killed the dinosaurs. The types of threats posed by nature have been argued to be relatively constant, though this has been disputed. [114] A number of other astronomical threats have also been identified. [115] [116] [117]