K-Pg Mass Extinction: A Day in Earth's Fate | Interactive Science Special
K-Pg mass extinction: A day in Earth's fate
Sixty-six million years ago, a giant rock from outer space brought an end to the dinosaur era. This marked the beginning of the modern world.
Simulated Reconstruction: Chicxulub Impact
Physical simulation parameters
10km diameter | 20km/s speed
System ready: Awaiting startup...
Disaster Deconstruction: From Impact to Rebirth
A life-or-death situation: Who survived?
| feature | 🦖 Extinctions (Dinosaurs) | 🐭 Survivors (early mammals) |
|---|---|---|
| body shape | Huge (requires a lot of food) | Tiny (metabolically flexible) |
| feeding habits | Single (only eats fresh meat/leaves) | Omnivorous (eats carrion/seeds/insects) |
| habitat | Earth's surface (exposed to thermal radiation) | Living in caves (to escape fires and harsh winters) |
irrefutable scientific evidence
🧪 Iridium anomaly
Extremely high concentrations of iridium have been found in the K-Pg geological layer. This element is rare on Earth's surface but abundant in meteorites, providing strong evidence of an extraterrestrial impact.
🕳️ Chicxulub Crater
Located on Mexico's Yucatan Peninsula, this massive underground crater is 180 kilometers in diameter. Dating analysis has determined that its formation time precisely matches the extinction event that occurred 66 million years ago.