Search results
Results from the WOW.Com Content Network
This is a list of asteroids that have impacted Earth after discovery and orbit calculation that predicted the impact in advance, which are cataloged by the Center for Near-Earth Object Studies (CNEOS). [1]
This list of impact structures (including impact craters) on Earth contains the majority of the 194+ confirmed impact structure given in the Earth Impact Database as of 2024. [1] Alphabetical lists for different continents can be found under Impact structures by continent below.
Due to Earth's escape velocity, the minimum impact velocity is 11 km/s with asteroid impacts averaging around 17 km/s on the Earth. [22] The most probable impact angle is 45 degrees. [22] Impact conditions such as asteroid size and speed, but also density and impact angle determine the kinetic energy released in an impact event.
If an asteroid at the bottom of this size range, one 7 metres (23 ft) across (with an absolute magnitude ggrater than 28.5), has average asteroid density and impacts the Earth at average meteor speed, its impact energy is about 15 kilotons TNT equivalent, or roughly equivalent to the blast energy of the Hiroshima bomb. [11]
The asteroid YR4's chances of impact now surpass the odds that Apophis once had of colliding with Earth when it was first discovered in 2004. Fortunately, the 130 to 300-foot asteroid is much ...
The most infamous asteroid impact occurred 66 million years ago, when a six-mile-wide space rock triggered a global winter, wiping out the dinosaurs and 75% of all species. By contrast, 2024 YR4 ...
While still an extremely low possibility, asteroid 2024 YR4's impact probability with Earth has increased from about 1% to a 2.3% chance on Dec. 22, 2032. As we observe the asteroid more, the ...
The following tables list geological features on Earth that are known impact events as well as possible, but for which there is currently no confirming scientific evidence in the peer-reviewed literature, impact events. In order for a structure to be confirmed as an impact crater, it must meet a stringent set of well-established criteria. Some ...