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Mar. 9, 2022 —Researchers have dated the enormous Hiawatha impact crater, a 31-kilometer-wide meteorite crater buried under a kilometer of Greenlandic ice. The dating ends speculation that the meteorite impacted ...
Feb. 14, 2022 —Several dozen small impact craters, 10--70-m in size, have been discovered in southeastern Wyoming. A team of U.S. and German geoscientists found these ancient craters in exposed sedimentary layers ...
July 14, 2020 —The impact event that formed the Chicxulub crater (Yucatán Peninsula, México) caused the extinction of 75% of species on Earth 66 million years ago, including non-avian dinosaurs. One place that ...
Feb. 24, 2021 —Researchers believe they have closed the case of what killed the dinosaurs, definitively linking their extinction with an asteroid that slammed into Earth 66 million years ago by finding a key piece ...
Mar. 11, 2021 —Several years after scientists discovered what was considered the oldest crater a meteorite made on the planet, another team found it's actually the result of normal geological ...
Apr. 8, 2021 —The 15-million-year-old Nördlinger Ries is an asteroid impact crater filled with lake sediments. A research team has now discovered a volcanic ash layer in the crater. In addition, they show that ...
July 20, 2020 —The shape of volcanoes and their craters provide critical information on their formation and eruptive history. Techniques applied to photographs -- photogrammetry -- show promise and utility in ...
Feb. 22, 2023 —在过去无数的陨石撞击地球and shaped the history of our planet. It is assumed, for example, that meteorites brought with them a large part of its water. The extinction of the ...
Jan. 21, 2021 —A comparison of chemical and climate weathering of sedimentary rock in Mars' Gale Crater indicate the region's mean temperature billions of years ago was akin to current conditions on ...
June 9, 2022 —While much of public attention on Yellowstone focuses on its potential to produce large supereruptions, the hazards that are much more likely to occur are smaller, violent hydrothermal explosions. ...