Science

Research uses X-ray telescopes and a new data analysis technique to describe space objects — ScienceDaily

Black holes with varying light signatures but that were thought to be the same objects being viewed from different angles are actually in different stages of the life cycle, according to a study led by Dartmouth researchers. The research on black holes known as “active galactic nuclei,” or AGNs, says that it definitively shows the …

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Hot on trail of causes of rapid ice sheet instabilities in climate history

Heinrich Events or, more accurately, Heinrich Layers, are recurrent conspicuous sediment layers, usually ten to 15 centimeters thick, with very coarse rock components that interrupt the otherwise fine-grained oceanic deposits in the North Atlantic. Discovered and first described in the 1980s by the geologist Hartmut Heinrich, US geochemist Wally Broecker later officially named them Heinrich …

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Rare Mineral from Martian Crater was Created in Explosive Volcanic Eruption Over 3 Billion Years Ago

Tridymite is a high-temperature, low-pressure form of quartz that is extremely rare on Earth, and it wasn’t clear how a chunk of it ended up in Gale Crater on Mars, the home of NASA’s Curiosity rover. (a) Location of the Buckskin mudstone sample (red star) in Gale Crater, Mars; (b and c) Images from the …

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Scientists discover places on moon where it’s always ‘sweater weather’

NASA/GSFC/Arizona State University Researchers found that shadowed areas of a pit (pictured above) in the Mare Tranquillitatis region stay consistently cool during the day and night. The pit likely leads to a similarly temperate lava cave. Key takeaways: Unhospitable. Temperatures on the moon’s surface swing wildly between boiling hot and freezing cold.​​​​​​ Humans on the …

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Research offers clearest understanding yet of life cycle of supermassive black holes

Black holes with varying light signatures but that were thought to be the same objects being viewed from different angles are actually in different stages of the life cycle, according to a study led by Dartmouth researchers. The research on black holes known as “active galactic nuclei,” or AGNs, says that it definitively shows the …

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How Do Nanoparticles Grow? Atomic-Scale Movie Shows How

New video footage captured by Berkeley Lab scientists reveals for the first time that nanoparticle growth is directed not by difference in size, but by defects. (Credit: Haimei Zheng/Berkeley Lab. Courtesy of Nature Communications.) For decades, a textbook process known as “Ostwald ripening,” named for the Nobel Prize-winning chemist Wilhelm Ostwald, has guided the design …

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WVXU: UC scientists are deep-freezing molecules. Here’s why they’re so excited about it

The University of Cincinnati is making a significant commitment of funds and resources to establish the latest innovation in microscopy as the focal point of the Center for Advanced Structural Biology in the College of Medicine. The project will be built out in three phases over the next five years. WVXU covered the story by …

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Trilobites’ growth may have resembled that of modern marine crustaceans — ScienceDaily

Trilobites — extinct marine arthropods that roamed the world’s oceans from about 520 million years ago until they went extinct 250 million years ago, at the end of the Permian period — may have grown in a similar fashion and reached ages that match those of extant crustaceans, a new study has found. In a …

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Thermal coatings for urban buildings

Researchers in Japan have added impurities to layered perovskite ceramics which enhances their near-infrared light reflectivity making them ideally suited to heat mitigation. Layered perovskites like titanium-added calcium manganese oxide ceramics have attracted attention as materials that can prevent solar heat absorption by reflecting near-infrared (NIR) radiation better than commercial pigments. However, the mechanism underlying …

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