The asteroid that killed the dinosaurs struck the Earth at the site of the Chicxulub crater, which is located underneath the Yucatán Peninsula in Mexico. The crater is partly on land and partly underwater off the coast of the peninsula
. This impact crater is about 180 to 200 kilometers (110 to 120 miles) in diameter and was formed about 66 million years ago when a large asteroid, roughly 10 to 15 kilometers wide, collided with Earth
. The impact created a massive crater named after the nearby town of Chicxulub Pueblo. The collision caused catastrophic environmental effects that led to the mass extinction event wiping out about 75% of all species on Earth, including all non-avian dinosaurs
. The crater is buried beneath sediments and partially submerged in the Gulf of Mexico but has been extensively studied through drilling and geophysical surveys
. In summary, the asteroid landed at the Chicxulub crater site beneath the Yucatán Peninsula, Mexico, marking the location of the dinosaur-killing impact
