Artifacts recovered with tektites from the 803,000-year-old Australasian strewnfield event in Asia link a Homo erectus population to a significant meteorite impact and its aftermath.

A meteorite impact occurs when a rocky, metallic (typically iron), or icy body that had been orbiting the Sun passes through the atmosphere to hit the Earth’s surface. In contrast meteors …

2025年1月7日 · By studying meteorites we can learn more about our solar system’s history. This includes learning the age and composition of different planetary building blocks, the …

Sentry is a highly automated collision monitoring system that continually scans the most current asteroid catalog for possibilities of future impact with Earth over the next 100 years. Whenever …

2024年10月21日 · The S2 meteorite, estimated to have been up to 200 times larger than the one that killed the dinosaurs, triggered a tsunami that mixed up the ocean and flushed debris from …

Giant meteorite impacts during Earth’s early history likely had significant effects on early life. We studied the effects on the surface environment and life of a Paleoarchean impactor ~50 to …

Meteorite Impact Velocities The average velocity of meteoroids entering our atmosphere is 10-70 km/second. The smaller ones that survive the trip to the Earth's surface are quickly slowed by …

Impacts of large meteorites have never been observed by humans. Much of our knowledge about what happens next must come from scaled experiments. As the solid object plows into the …

2024年4月4日 · Meteorite Impact Craters. Meteorites crash through Earth’s atmosphere with tremendous force. The largest meteorites leave enormous holes in the ground called impact …

The effects of meteorite impacts depend on the composition of the impactor and its trajectory when entering the atmosphere. Large asteroids (>200 m for rocky composition, >50 m for iron …