Near-Earth Object Impacts News
August 29, 2016

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More Near-Earth Object Impacts News
August 29, 2016

Transformations to Granular Zircon Revealed: Meteor Crater, Arizona

July 27, 2016 — Having been reported in lunar samples returned by Apollo astronauts, meteorites, impact glass, and at a number of meteorite craters on Earth, granular zircon is the most unusual and enigmatic type of ... read more

Dec. 16, 2015 — New research has found that in Earth's beginning, meteorites striking the planet may have carried within them an extraterrestrial mineral that, as it corroded in water on Earth, could have ... read more

Oct. 20, 2015 — For more than 30 years, scientists have argued about a controversial hypothesis relating to periodic mass extinctions and impact craters -- caused by comet and asteroid showers -- on Earth. Now ... read more

Oct. 1, 2015 — The debate whether an asteroid impact or volcanic eruptions in India led to the mass extinction 66 million years ago is becoming increasingly irrelevant, as new dates for the eruptions show that the ... read more

Sep. 22, 2015 — There is more oxygen in the core of Earth than originally thought. Geologists have discovered some new findings about Earth's core and mantle by considering their geophysical and geochemical ... read more

Sep. 14, 2015 — Scientists used high-power laser beams to simulate the shock effects of a meteorite impact in silica, one of the most abundant materials in the Earth’s crust. They observed, for the first time, its ... read more

Sep. 11, 2015 — Researchers have found traces of two major meteorite impacts in Sweden, a twin strike that occurred around 460 million years ago. One is enormous, while the other is a tenth of the size of the first. ... read more

Aug. 19, 2015 — Comet impact on Earth are synonymous with great extinctions, but now research shows that early comet impact would have become a driving force to cause substantial synthesis of peptides -- the first ... read more

Aug. 5, 2015 — A NASA camera aboard the Deep Space Climate Observatory satellite captured a unique view of the moon as it moved in front of the sunlit side of Earth last month. The series of test images shows the ... read more

July 21, 2015 — Compared to its celestial neighbors Venus and Mars, Earth is a pretty habitable place. So how did we get so lucky? A new study sheds light on the improbable evolutionary path that enabled Earth to ... read more

June 30, 2015 — Researchers have calculated the number of undiscovered meteorite impact sites on Earth's surface. Geologists say a total of 188 have been confirmed so far, and 340 are still awaiting discovery. ... read more

Monitoring Volcanoes With Ground-Based Atomic Clocks

June 30, 2015 — High-precision atomic clocks can be used to monitor volcanoes and potentially improve predictions of future eruptions, researchers report. In addition, a ground-based network of atomic clocks could ... read more

May 18, 2015 — An unusual and unexpected discovery: on the floor of Lake Neuchatel, geologists have happened upon huge underwater craters -- some of the largest in the world to be found in lakes. They are not ... read more

May 11, 2015 — New research has questioned the role played by ocean acidification, produced by the asteroid impact that killed the dinosaurs, in the extinction of ammonites and other planktonic calcifiers 66 ... read more

May 7, 2015 — New research strongly suggests that water delivery via asteroids or comets is likely taking place in many other planetary systems, just as it happened on Earth. The quantity of water on Earth is not ... read more

May 4, 2015 — Scientists have addressed the 'uncomfortably close' occurrence of the Chicxulub impact in the Yucatan and the most voluminous phase of the Deccan Traps flood basalt eruptions in India. ... read more

Apr. 30, 2015 — The theory that an asteroid impact killed off the dinosaurs 66 million years ago is well accepted, but one puzzle is why another global catastrophe -- the huge, million-year eruption of the Deccan ... read more

Apr. 16, 2015 — Through a combination of data analysis and numerical modeling work, researchers have found a record of the ancient moon-forming giant impact observable in stony meteorites. The research indicates ... read more

Meteorites Key to the Story of Earth's Layers

Apr. 13, 2015 — A new analysis of the chemical make-up of meteorites has helped scientists work out when the Earth formed its layers.The research by an international team of scientists confirmed the Earth's ... read more

Mar. 23, 2015 — A 400-kilometer-wide impact zone from a huge meteorite that broke in two moments before it slammed into the Earth has been found in Central Australia. The crater from the impact millions of years ago ... read more

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