Apotentially hazardous asteroid (PHA) is any asteroid measuring more than 460 feet (140 m) in diameter and comes within 4.65 million miles (7.48 million km) of Earth, or roughly 20 times the TheNASA-funded Asteroid Terrestrial-impact Last Alert System (ATLAS)—a state-of-the-art asteroid detection system operated by the University of Hawaiʻi (UH) Theauthors present the more than 200 terrestrial impact sites in high-resolution topographic maps and satellite images, complete with detailed geological descriptions and photographs of the crater structures Watchon. This animation depicts the orbital trajectory of asteroid 99942 Apophis as it zooms safely past Earth on April 13, 2029. Earth’s gravity will slightly deflect the trajectory as the 1,100-foot-wide (340-meter-wide) near-Earth object comes within 20,000 miles (32,000 kilometers) of our planet’s surface. TheTunguska event (occasionally also called the Tunguska incident) was an explosion, estimated to have a yield of at least 3-5 megatons of TNT, that occurred near the Podkamennaya Tunguska River in Yeniseysk Governorate (now Krasnoyarsk Krai), Russia, on the morning of 30 June 1908. The explosion over the sparsely populated East Lateron Friday, the asteroid 2012 DA14 will make a close pass of Earth, skimming by at a distance of 28,000km. Astronomers have ruled out any chance of a collision between that asteroid and Earth. Teachingabout the Early Earth: Evolution of Tectonics, Life, and the Early Atmosphere 4000 Years of Meteorite Impacts This interactive map created by Javier Thedanger of an asteroid smacking into Earth is a clear and present hazard, underscored by the huge fireball and shattering explosion that occurred over Chelyabinsk, Russia, in February 2013 Vay Tiền Nhanh Chỉ Cần Cmnd.

asteroid impacts on earth map