1 Introduction. Impact craters are ubiquitous features on all solid solar system bodies. The final morphology of a crater depends on its size: small craters have simple, bowl-shaped cavities, while larger craters are subject to more profound late-stage, gravity-driven collapse, leading to complex morphologies including flat crater floors, central peaks or rings of peaks, and a terrace zone —Scientists uncover the largest impact crater on Earth under 100,000 years old Quadrantid meteor shower 2024: The year's 1st meteor shower blazes over North America on Jan. 3. The Cretaceous–Paleogene ( K–Pg) extinction event, [a] also known as the Cretaceous–Tertiary (K–T) extinction, [b] was a sudden mass extinction of three-quarters of the plant and animal species on Earth, [2] [3] approximately 66 million years ago. The event caused the extinction of all non-avian dinosaurs. With a diameter of just 66 feet, the Chelyabinsk meteor was the largest object to enter Earth's atmosphere from space since 1908, 9 km diameter crater 0.6 km deep It was discovered to be 82% iron and 16% nickel. That makes it a rarity among meteorites, as only about 6% of meteorites are primarily iron. Most impressively, it weighs around 50 tons, making it the biggest intact meteorite on the planet. And yet it left virtually no crater when it slammed into the earth. How is this possible? 1. Manicouagan Reservoir. The Manicouagan Reservoir is one of the lakes formed by a large crater from the impact of meteorites on Earth in ancient times. Reported NASA, The crater, located in Quebec, Canada, has a diameter of about 100 kilometers. Until now, Lake Manicouagan became one of the largest craters due to meteorite impacts that The immense Chicxulub crater is a remnant of one of the most consequential days in the history of life on Earth. The asteroid strike triggered the Cretaceous-Paleogene, or K-Pg, mass extinction. The largest impact crater on Earth. An asteroid some six miles (10 kilometers) wide or bigger smashed into Earth and created the Vredefort Crater, in present-day South Africa, some 2 billion years RKXG.