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May 20, 2021 —Researchers report that they can detect showers from the debris in the path of comets that pass close to Earth orbit and return as infrequently as once every 4,000 ...
Mar. 31, 2021 —A research team of international space scientists has found new evidence of a low-altitude meteoritic touchdown event reaching the Antarctic ice sheet 430,000 years ...
Dec. 11, 2020 —Mass extinctions of land-dwelling animals--including amphibians, reptiles, mammals, and birds -- follow a cycle of about 27 million years, coinciding with previously reported mass extinctions of ...
Oct. 21, 2021 —A team has updated its asteroid bombardment model of the Earth with the latest geologic evidence of ancient, large collisions. These models have been used to understand how impacts may have affected ...
Mar. 1, 2023 —Astronomers offer new insight into how deflection missions can protect the planet from future Earth-bound asteroids and ...
Nov. 1, 2022 —On September 26, NASA's Double Asteroid Redirection Test (DART) spacecraft crashed into Dimorphos, a moonlet of the near-Earth asteroid Didymos, at 14,000 miles per hour. Prior to the impact, ...
Mar. 11, 2021 —Using the same principles that make polarized sunglasses possible, a team of researchers at the Arecibo Observatory in Puerto Rico have developed a technique that will help better defend against ...
June 14, 2023 —在过去的几十年中,研究人员认为地球was created over a period of more than 100 million years. However, a new study from suggests that the creation of Earth was much more rapid, and that ...
Nov. 3, 2022 —A peculiar property of the Earth's magnetic field could help us to work out how our planet was created 4.5 billion years ago, according to a new scientific ...
Mar. 1, 2023 —In 2022 NASA embarked on a bold experiment to see if they could change an asteroid's velocity by smacking it with a ballistic probe -- kind of like hitting it with a hammer. This experiment was ...