KT Extinction and Origins of Life
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KT Extinction and Origins of Life

Learn about the KT extinction event, its impact on life on Earth, and the recent discoveries that shed light on the origins of life.

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@SpeedyRockCrystal

Questions and Answers

What event made way for the rise of mammals?

The KT extinction

What conditions were present in the channels after the asteroid impact?

Hot at first, then warm and damp

What is the significance of the Chicxulub crater?

It gives us a glimpse into the conditions on ancient, lifeless Earth

What is the role of asteroids in the origins of life?

<p>They could have provided the ingredients for life to begin</p> Signup and view all the answers

What is the goal of NASA's OSIRIS-REx mission?

<p>To search for clues about the origins of life on Earth</p> Signup and view all the answers

Study Notes

KT Extinction and the Rise of Mammals

  • The KT extinction event led to the rise of mammals
  • The extinction event also created a network of channels filled with warm water

Origin of Life on Earth

  • The KT extinction event provides insights into the conditions present on ancient, lifeless Earth
  • The asteroid crater suggests that life could have begun in "warm little ponds" with minerals mixing with water and organic molecules
  • Asteroids are rich in organic compounds that could have provided the ingredients for life to begin
  • Asteroid impacts could have created warm, wet, mineral-rich niches, similar to Darwin's "warm little ponds"

NASA's OSIRIS-REx Mission

  • NASA's OSIRIS-REx is currently searching asteroid Bennu for clues on whether asteroids helped life begin on Earth
  • Scientists suggest asteroid Bennu could collide with Earth in the 22nd century
  • The mission aims to uncover the origins of life on Earth, which existed billions of years before the dinosaurs

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