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  1. Mar 9, 2005 · The big hole in the ground -- 570 feet deep and 4,100 feet (1.25 kilometers) across -- was blown into existence 50,000 years ago by an asteroid roughly 130 feet (40 meters) wide.

  2. Apr 23, 2015 · The impact left a giant hole in the landscape of what is now Northern Arizona, 590 feet deep and ¾ of a mile across. ... of these objects in the space between the two planets. Some are icy, some ...

    • Mary Beth Griggs
  3. Though the incident is classified as an impact event, the object is thought to have exploded at an altitude of 5 to 10 kilometres (3 to 6 miles) rather than hitting the Earth's surface, leaving no impact crater. The Tunguska event is the largest impact event on Earth in recorded history, though much larger impacts occurred in prehistoric times.

  4. Meteorite crater - Impact Process, Ejecta, Shockwaves: When an asteroidal or cometary object strikes a planetary surface, it is traveling typically at several tens of kilometres per second—many times the speed of sound. A collision at such extreme speeds is called a hypervelocity impact. Although the resulting depression may bear some resemblance to the hole that results from throwing a ...

  5. Impact craters are formed by the transfer of energy from a moving mass (meteorite) to a stationary body (planet). Kinetic energy is the energy of motion. It is defined as one half the mass of an object, times the velocity of the object squared (K.E. = 1/2 Mv2). Objects in space move very fast, so this can be a huge amount of energy! In an impact

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  6. Jun 13, 2024 · An impact crater is formed when an object like an asteroid or meteorite crashes into the surface of a larger solid object like a planet or a moon. To form a true impact crater, this object needs to be traveling extremely fast—many thousands of miles per hour! When a solid object crashes into something at these super fast speeds, it forms a ...

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  8. 6 days ago · The piece that came through the family's house in Florida from the space station was U.S. space junk, so the family had to file a claim through the Federal Tort Claims Act, the process by which U ...