Final answer:
Strong evidence such as the Chicxulub crater and sedimentary layers enriched with iridium support the idea that a massive bolide impact led to the extinction of dinosaurs 66 million years ago, making the statement true.
Step-by-step explanation:
True, there is compelling evidence that supports the idea that a bolide, which is a large meteorite or other extraterrestrial body, collided with Earth 66 million years ago. This event is well-known as the Cretaceous-Paleogene (K-Pg) extinction event, and it marked the end of the Cretaceous period, leading to the extinction of the dinosaurs and many other species. The evidence includes a large crater located in the Yucatán Peninsula of Mexico, known as the Chicxulub crater, as well as a worldwide layer of sediment that is high in iridium, a metal that is rare in Earth's crust but common in cosmic structures like asteroids. Other findings related to this event include shocked minerals and tiny glass spherules, which are indicative of the high temperatures and pressures from an impact of such magnitude.