Summary:

- The article discusses the origin of the asteroid that caused the mass extinction of dinosaurs and other species around 66 million years ago. It explains that the asteroid, known as the Chicxulub impactor, came from the outer solar system, likely the main asteroid belt between Mars and Jupiter.

- Researchers have analyzed the chemical composition and isotopic signatures of the Chicxulub impactor and found that it closely matches the composition of asteroids from the outer solar system, rather than from the inner solar system. This suggests the impactor was a rogue asteroid that was dislodged from its original orbit and eventually collided with Earth.

- The article highlights how studying the origin of the Chicxulub impactor provides insights into the dynamics of our solar system and the processes that can lead to catastrophic events on Earth, such as the mass extinction of dinosaurs.