The white dwarf observed by NASA’s Transiting Exoplanet Survey Satellite (TESS) is a member of the binary system TW Pictoris and is known to be accreting matter from its companion star. An artist’s impression of a white dwarf — in this case a white dwarf in the MV Lyrae system — accreting as it draws…
Several ancient artifacts, including a 900-year-old sword of a Crusader knight, have been discovered by Shlomi Katzin, a scuba diver from the city of Atlit in Israel, and his colleagues. Shlomi Katzin with the 900-year-old crusader sword. Image credit: Nir Distelfeld / Israel Antiquities Authority. The ancient iron sword has a 1-m- (3.3-foot) long blade…
A team of U.S. researchers has developed a reconfigurable swarm of identical low-cost four-legged robots — with directionally flexible legs and tail — that can be linked on demand and autonomously. Ozkan-Aydin & Goldman showed through a series of experiments that a swarm of chainable legged robots is capable of locomoting on challenging environments and…
An ancient wine production complex — the largest known in the world from the Byzantine period — has been discovered by a team of archaeologists from the Israel Antiquities Authority (IAA). The ancient winemaking facility in Yavne, Israel. Image credit: Israel Antiquities Authority. The 1,500-year-old winemaking facility was unearthed at an archaeological city in Yavne,…
Astronomers using the Low Frequency Array (LOFAR), a large radio telescope network located mainly in the Netherlands, have detected coherent low-frequency (less than 200 MHz) radio emission from a sample of 19 red dwarf (M-dwarf) stars. Three of their detections — DG CVn, CR Dra and Gliese 3729 — are known binary systems with less than…
A team of biologists from the University of Surrey, the MRC Laboratory for Molecular Biology, Wake Forest University and the École Centrale de Lyon has discovered that red blood cells generate an electric field voltage that appears outside and not just within, meaning each cell acts as a tiny electrode. Hughes et al. demonstrate an…
An international team of scientists has analyzed a diverse set of presolar grains with the goal of realizing their true stellar origins. Palmerini et al. analyzed the isotopic composition of heavy neutron capture elements measured in SiC stardust grains extracted from pristine meteorites, interpreting them as the outcome of s-process nucleosynthesis occurring in the AGB…
The Cronica universalis, written in Latin by the Milanese friar Galvaneus Flamma (in Italian, Galvano Fiamma, 1283 – c. 1345), contains an astonishing reference to a land named Marckalada (terra que dicitur Marckalada), situated west from Greenland. This land is recognizable as the Markland mentioned by some Icelandic sources and identified as some part of…
In the genome of Homo sapiens, about 98% of DNA sequences are non-coding regions that were previously disregarded as ‘junk DNA.’ In fact, junk DNA contains a variety of regions which precisely control the expression of genes. Now, a team of stem cell researchers at Lund University has examined what it is in our DNA…
Dr. John Healy, a marine biologist at the Queensland Museum, the University of Queensland, and the Field Museum of Natural History, has described a new species of the genus Amoria from shells dredged off the Australian mid-east coast. Holotype of Amoria thorae, dredged off Cape Moreton, Queensland and Tweed Heads, New South Wales, Australia: (A)…
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