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Using the Gemini Multi-conjugate Adaptive Optics System (GeMS) and the Gemini South Adaptive Optics Imager (GSAOI) on the 8.1-m Gemini South telescope on Cerro Pachón on the edge of the Chilean Andes, astronomers have captured images of two wiggling stellar jets: MHO 2147 and MHO 1502. The sinuous young stellar jet, MHO 2147, meanders lazily across a field of stars in this image captured by the...
In 2018, the Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) instrument onboard ESA’s Mars Express orbiter found evidence of liquid water under the ice in Ultimi Scopuli, a region near the south pole of Mars. In new research, a team of researchers from Italy, the United States and Australia measured the properties of ice-brine mixtures as cold as minus 98 degrees Celsius (minus...
Archaeologists have unearthed the earliest micro-botanical evidence of the summer grain broomcorn millet (Panicum miliaceum) in Mesopotamia, identified using phytoliths (microscopic plant remains) in dung-rich sediments from Khani Masi, a mid-second millennium BCE site located in northern Iraq. Panicum miliaceum (left) and Echinochloa crus-galli. Image credit: Otto Wilhelm / Biolib.de. Multi-cropping...
Salpinganthium hispaniolanum grew in the forests of Hispaniola during the mid-Tertiary, between 20 and 30 million years ago. Salpinganthium hispaniolanum. Image credit: Poinar, Jr. & Chambers, doi: 10.17348/jbrit.v15.i2.1161. The flowers of Salpinganthium hispaniolanum were found in several lumps of amber recovered from an amber mine in the mountains of the Dominican Republic. The new species...
Limb regeneration is a frontier in biomedical science. Organisms such as the African clawed frog (Xenopus laevis) — whose limited regenerative capacities in adulthood mirror those of humans — are important models with which to test interventions that can restore form and function. In new research, a team of scientists at Tufts University demonstrated long-term (18 months) regrowth, marked...
A unique combination of experimental data from CERN’s Isotope mass Separator On-Line (ISOLDE) facility and state-of-the-art models has resulted in an excellent agreement between experiment and theory. Frequency-time spectrum of (a) a 65Ni resonance, (b) the temporal ion-bunch structure, and (c) the laser-spectroscopic resonance spectrum; (d) a resonance of 70Ni. Image credit: Malbrunot-Ettenauer...
Limb regeneration is a frontier in biomedical science. Organisms such as the African clawed frog (Xenopus laevis) — whose limited regenerative capacities in adulthood mirror those of humans — are important models with which to test interventions that can restore form and function. In new research, a team of scientists at Tufts University demonstrated long-term (18 months) regrowth, marked...
Researchers from the University of Adelaide and elsewhere have sequenced and analyzed mitochondrial DNA from fossils of cave lions (Panthera spp.) and brown bears (Ursus arctos), two megafaunal carnivorans that dispersed from Eurasia into North America during the Pleistocene, to better understand the timing and drivers of their past movement between the continents across the Bering Land Bridge. Their...
Calcium silicate perovskite (CaSiO3) is arguably the most geochemically important phase in the Earth’s lower mantle, because it concentrates elements that are incompatible in the upper mantle. No one has ever successfully retrieved this high-pressure compound from the lower mantle before. This is because CaSiO3-perovskite is ‘unquenchable,’ meaning that it cannot retain its structure after...
A team of researchers from the Department of Food Science and Nutrition at the Illinois Institute of Technology has reviewed the preclinical and clinical trial evidence to assess intake of the watermelon (Citrullus lanatus) on cardiovascular and metabolic outcomes and to identify future directions important for establishing dietary guidance and therapeutic recommendations actionable by health care...