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155,131 articles from ScienceDaily

Webb, Hubble capture detailed views of DART impact

Two of NASA's Great Observatories, the James Webb Space Telescope and the Hubble Space Telescope, have captured views of a unique NASA experiment designed to intentionally smash a spacecraft into a small asteroid in the world's first-ever in-space test for planetary defense. These observations of NASA's Double Asteroid Redirection Test (DART) impact mark the first time that Webb and Hubble...

Observations confirm model predictions of sea-level change from Greenland melt

Rising sea levels from melting glaciers and ice sheets pose an increasing threat to coastal communities worldwide. A new analysis of high-resolution satellite observations takes a major step forward in assessing this risk by confirming theoretical predictions and computational models of sea-level changes used to forecast climate-change-driven impacts.

Sniffing out the brain's smelling power

Since their discovery over 100 years ago, neurons in the brain's olfactory bulb, called tufted cells, have been difficult to study. By leveraging new technology, neuroscientists were able to precisely dissect the neural activity of these tufted cells for the first time. They discovered the tufted cells were better at recognizing smells than mitral cells, their neighboring neurons in the olfactory...

Neural net computing in water

A team of researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have developed an ionic circuit comprising hundreds of ionic transistors and performed a core process of neural net computing.

Scientists find link between fast-melting Arctic ice and ocean acidification

An international team of researchers has found acidity levels increasing three to four times faster than ocean waters elsewhere and a strong correlation between the accelerated rate of melting ice in the region and the rate of ocean acidification. This threatens the Earth's climate and the survival of plants, shellfish, coral reefs and other marine life.


Potential first traces of the universe's earliest stars

Astronomers may have discovered the ancient chemical remains of the first stars to light up the Universe. Using an innovative analysis of a distant quasar observed by the 8.1-meter Gemini North telescope on Hawai'i, the scientists found an unusual ratio of elements that, they argue, could only come from the debris produced by the all-consuming explosion of a 300-solar-mass first-generation star.