Much of Sudbury’s original crater, thought to have measured at least 200 kilometers (120 miles) across, has been deformed and eroded. Despite this, the crater has had a lasting impact on the region. The Operational Land Imager (OLI) on Landsat 8 acquired this image of Sudbury Basin in southeastern Ontario on September 11, 2020.
The planet’s oldest known impact structures, which is what scientists call these massive craters, are only about 2 billion years old. We’re missing two and a half billion years of mega-craters. The steady tick of time and the relentless process of erosion are responsible for the gap, according to Matthew S. Huber, a planetary scientist at
Impact craters are formed rapidly. A meteor enters a celestial body’s exosphere (or outer atmosphere) and then hits the surface. There are generally three stages to creating an impact crater: contact, excavation, and modification. Contact is a fairly short stage where the meteor hits the surface and begins transferring energy to the

The Earth Impact Database (EID) comprises a list of confirmed impact structures from around the world. To date, there are 190 confirmed impact structures in the database. The database was conceived in its earliest form when a systematic search for impact craters was initiated in 1955 by the Dominion Observatory, Ottawa, under the direction of

This impact crater lies smack on top of the south rotational pole of the moon. It dates back to an ancient impact some 3.6 billion years ago. Shackleton's 12-kilometer-deep interior is in Most impact craters on Earth get disguised by the same forces that make this a living planet. Erosion wears down the crater's sides.Infilling happens when sediments, ice, windblown dust or other
The Vredefort Impact Crater was formed when an asteroid struck Earth about two billion years ago in an area that is now the country of South Africa. At the time of formation, the crater is believed to have been about 300 kilometers across. Since then, the crater and its ejecta have been removed by weathering and erosion.
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    • impact craters on earth map