Asteroid Bennu—the target of NASA's OSIRIS-REx sample return mission, led by the University of Arizona—is a mixture of materials from throughout, and even beyond, our solar system. Over the past few billion years, its ...
Astronomy
Aug 22, 2025
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Enhanced rock weathering (ERW) is a proposed method of carbon dioxide sequestration that involves spreading crushed silicate minerals on soils to drive chemical reactions that form carbonate minerals: Essentially, the idea ...
Earth Sciences
Apr 22, 2025
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37
A near-Earth object was likely ejected into space after an impact thousands of years ago. Now it could contribute new insights to asteroid and lunar science.
Planetary Sciences
Jan 22, 2025
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55
The source of Earth's water is an enduring mystery that extends to exoplanets and the notion of habitability. In broad terms, Earth's water was either part of the planet from the beginning of its formation in the solar nebula ...
Planetary Sciences
Oct 25, 2024
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The sight of a fireball streaking across the sky brings wonder and excitement to children and adults alike. It's a reminder that Earth is part of a much larger and incredibly dynamic system.
Planetary Sciences
Oct 19, 2024
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157
A new analysis of maps of the near and far sides of the moon shows that there are multiple sources of water and hydroxyl in the sunlit rocks and soils, including water-rich rocks excavated by meteor impacts at all latitudes.
Planetary Sciences
Sep 23, 2024
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124
Nickel (Ni) and cobalt (Co) are critical elements for modern technologies, with high-grade Ni and Co ores becoming increasingly scarce. Mafic and ultramafic deposits are low-grade, abundant alternatives to traditional Ni ...
Analytical Chemistry
Aug 26, 2024
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20
Tectonically active mountains play an important role in the natural CO2 regulation of the atmosphere. Competing processes take place here: At Earth's surface, erosion drives weathering processes that absorb or release CO2, ...
Earth Sciences
Apr 19, 2024
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563
In a study published in Science Advances, scientists have used new lithium isotope (δ7Li) data to show that continental clay export promoted organic carbon burial and thus atmospheric oxygenation during the Cambrian period.
Environment
Apr 15, 2024
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25
For many hundreds of millions of years, the average temperature at the surface of the Earth has varied by not much more than 20° Celsius, facilitating life on our planet. To maintain such stable temperatures, Earth must ...
Earth Sciences
Mar 7, 2024
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