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This is a list of asteroids that have impacted Earth after discovery and orbit calculation that predicted the impact in advance. As of December 2024 [update] , all of the asteroids with predicted impacts were under 5 m (16 ft) in size that were discovered just hours before impact, and burned up in the atmosphere as meteors .
The below charts visualise the warning times of the close approaches listed in the above bargraph, by the size of the asteroid instead of by the year they occurred in. The sizes of the charts show the relative sizes of the asteroids to scale. This is based on the absolute magnitude of each asteroid, an approximate measure of size based on ...
The list below shows all approaches by potentially hazardous objects (objects which can approach Earth within 0.05 astronomical units (AU)) without atmospheric contact which have been the closest ever observed at some point in time, from the discovery of the first such object to the record holder as of February 2025.
The head of planetary defense at the European Space Agency discusses 2024 YR4, an asteroid with a small chance of striking Earth eight years from now.
The Moon's existence is widely attributed to a huge impact early in Earth's history. [33] Impact events earlier in the history of Earth have been credited with creative as well as destructive events; it has been proposed that impacting comets delivered the Earth's water, and some have suggested that the origins of life may have been influenced ...
They found shifts about 100,000 years before the asteroids hit, but none around the time of the impacts or afterwards. A microscopic image shows the silica droplets that were found in a rock core ...
Most recorded impact craters are over 10 million years old, or have widely uncertain ages. The Chicxulub impact has been widely considered the most likely cause for the Cretaceous–Paleogene mass extinction , with some scholars linking other impacts like the Popigai impact in Russia and the Chesapeake Bay impact to later extinction events ...
The timeline of discovery of Solar System planets and their natural satellites charts the progress of the discovery of new bodies over history. Each object is listed in chronological order of its discovery (multiple dates occur when the moments of imaging, observation, and publication differ), identified through its various designations (including temporary and permanent schemes), and the ...