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1,619 articles from PhysOrg

New evidence our neighborhood in space is stuffed with hydrogen

Only the two Voyager spacecraft have ever been there, and it took than more than 30 years of supersonic travel. It lies well past the orbit of Pluto, through the rocky Kuiper belt, and on for four times that distance. This realm, marked only by an invisible magnetic boundary, is where Sun-dominated space ends: the closest reaches of interstellar space.

Experts see substantial danger to democratic stability around 2020 election

On the eve of the November 3 election, Bright Line Watch—the political science research project of faculty at the University of Rochester, the University of Chicago, and Dartmouth College—finds that experts are concerned about substantial risks to the legitimacy of the election, including potential problems in the casting and counting of votes, the Electoral College, and in the resolution of...


FRIDAY 30. OCTOBER 2020


Asteroid's scars tell stories of its past

By studying impact marks on the surface of asteroid Bennu—the target of NASA's OSIRIS-REx mission—a team of researchers led by the University of Arizona has uncovered the asteroid's past and revealed that despite forming hundreds of millions of years ago, Bennu wandered into Earth's neighborhood only very recently.

New study reveals United States a top source of plastic pollution in coastal environments

A study published today in the journal Science Advances has revealed that the United States ranks as high as third among countries contributing to coastal plastic pollution when taking into account its scrap plastic exports as well as the latest figures on illegal dumping and littering in the country. The new research challenges the once-held assumption that the United States is adequately...

Future lake food webs in subarctic have more biomass and contain more omega-3 fatty acids

Subarctic regions are facing rapid changes in climate and land-use intensity. An international research team recently completed an investigation to see how these changes are affecting the food webs and fish communities of lakes in northern Finland. Biomasses and omega-3 fatty acids, EPA and DHA, were determined from the algal producers at the base of food web to large carnivorous fish from 20...

Dynamic photonic barcodes record energy transfer at the biointerface

Optical barcodes enable detection and tracking via unique spectral fingerprints. They've been widely applied in areas ranging from multiplexed bioassays and cell tagging to anticounterfeiting and security. Yu-Cheng Chen of the Bio+Intelligent Photonics Laboratory at Nanyang Technological University notes that the concept of optical barcodes typically refers to a fixed spectral pattern...

Assessing the habitability of planets around old red dwarfs

A new study using data from NASA's Chandra X-ray Observatory and Hubble Space Telescope gives new insight into an important question: how habitable are planets that orbit the most common type of stars in the Galaxy? The target of the new study, as reported in our press release, is Barnard's Star, which is one of the closest stars to Earth at a distance of just 6 light years. Barnard's Star is a...

Copernicus Sentinel-6 measuring sea-levels using radar altimetry

This November the newest member of the EU's Copernicus program, Sentinel-6 Michael Freilich, will take to the heavens from Vandenberg Air Force Base in California. The satellite is named after NASA's former Director of Earth Observation and is a radar altimetry mission to monitor sea-level rise, wave-height and windspeed.

The traits of Florisbad skull reinforce the mosaic hypothesis of human evolution

Emiliano Bruner, a paleoneurologist at the Centro Nacional de Investigación sobre la Evolución Humana (CENIEH), in collaboration with Marlize Lombard, of the University of Johannesburg, has just published a study in the Journal of Anthropological Sciences which describes the braincase traits of Florisbad, a fossil found in South Africa in 1932, and its similarities with other species like Homo...