Scientists Discover Two Most Distant Stars Ever Detected in Milky Way Galaxy This artists impression shows the structure of our Milky Way Galaxy, including the location of the spiral arms and other components such as the bulge. Image credit: NASA / JPL-Caltech / ESO / R. Hurt. A team of astronomers using the Red Channel spectrograph at the MMT Observatory on Mt. Hopkins in Arizona has discovered the most distant Milky Way stars known to date – ULAS J001535.72+015549.6 and ULAS J074417.48+253233.0. These cool red giants are extremely far away, at distances of 775,000 and 900,000 light years, respectively. This artist’s impression shows the structure of our Milky... read more... This image shows the nearby spiral galaxy Messier 101 and the seven newly discovered dwarf galaxies. Image credit: Allison Merritt et al. Dragonfly Telephoto Array Discovers Seven Dwarf Galaxies around Messier 101 This artists impression shows dust forming in the environment around a supernova explosion. Image credit: ESO / M. Kornmesser. Astronomers Zero in on Stardust around Supernova SN 2010jl More Astronomy news Supermassive Black Hole in Seyfert Galaxy IC 5063 Surprises Astronomers Astronomers: Two Goldilocks Exoplanets in Gliese 581 System Just Cosmic Illusion Astronomers Discover Cold Terrestrial Exoplanet in Binary Star System Astronomers Zoom in on Star-Forming Region Gum 15 NASA’s Solar Observatories Capture Unusual Eruptions on Sun More Astronomy news Space Exploration New Study Highlights Importance of Oceans for Exoplanet Habitability Artists concept of a cryobot in the ocean of Jupiters moon Europa. Image credit: NASA. Oceans are crucial for supporting Earth-like life on extrasolar planets, according to a study published in the journal Astrobiology. Artist’s concept of a cryobot in the ocean of Jupiter’s moon Europa. Image credit: NASA. The potential habitability of an exoplanet crucially depends on how its atmospheric and ocean circulation transports heat from warmer to cooler regions. Previous studies... read more... Unlike an ordinary daytime photo, this nighttime image of Martian surface shows how warm various surface areas are: brighter tones mean warmer temperatures, which indicate areas with rockier surface materials; darker areas indicate cooler and dustier terrain. Image credit: NASA / JPL-Caltech / Arizona State University. Scientists Create Map of Martian Surface Properties There are three types of ultraviolet radiation: UV-A (315-400nm), UV-B (280-315 nm) and UV-C (200-280 nm). The increased exposure to UV-B radiation has specific effects on human health, crops, terrestrial ecosystems, aquatic ecosystems, and biogeochemical cycles. Record Level of Solar UV-B Radiation Measured in Bolivian Andes More Space Exploration news Sun’s Coronal Mass Ejection Wave Reaches Voyager 1 Titan Harbors Very Salty Ocean, Say Scientists NASA Tests Flying Saucer-Shaped Vehicle for Future Mars Landing Nitrogen in Atmosphere of Titan Might Pre-Date Saturn, Study Says Planetary Scientists Discover Mysterious Geologic Object on Titan More Space Exploration news Archaeology Archaeologists Find Neo-Assyrian Administrative Tokens at Ziyaret Tepe A few of the hundreds of clay tokens unearthed at Ziyaret Tepe, Turkey. Image credit: Ziyaret Tepe Archaeological Project. Archaeological excavations in southeastern Turkey at Ziyaret Tepe – the site of the ancient city Tušhan, a provincial capital of the Neo-Assyrian Empire – have uncovered a large number of tokens that were used to account for commodities such as cattle and grain. A few of the hundreds of clay tokens unearthed at Ziyaret Tepe, Turkey. Image credit: Ziyaret Tepe Archaeological Project. Over... read more... This image shows a reconstruction of the gomphothere Cuvieronius sp. Image credit: Sergio de la Rosa. Clovis People Hunted Gomphotheres 13,400 Years Ago, Archaeological Evidence Indicates Persian warriors, a detail from the frieze in Darius palace in Susa. Pergamon Museum / Vorderasiatisches Museum, Germany. Image credit: Mohammed Shamma / CC BY 2.0. Mystery Surrounding Lost Army of Persian King Cambyses II May Have Been Solved More Archaeology news 500-Year-Old Wall Paintings Found in Angkor Wat Rare Crusader-Period Lead Seal Found in Jerusalem Paleolithic Tools Unearthed at U.S. Embassy in London Santa Maria: Archaeologists Claim to Have Found Flagship of Christopher Columbus Early Image of Jesus Christ Discovered at Oxyrhynchus, Egypt More Archaeology news Paleontology Lyrarapax unguispinus: Paleontologists Discover New Cambrian Marine Predator This is an artists impression of Lyrarapax unguispinus. Image credit: Nicholas Strausfeld / University of Arizona. Paleontologists led by Dr Nicholas Strausfeld from the University of Arizona’s Center for Insect Science have discovered the fossilized remains of Lyrarapax unguispinus – one of the world’s first known predators that lived in what in now southwest China during the Cambrian period, about 520 million years ago. This is an artist’s impression of Lyrarapax unguispinus. Image credit:... read more... Life reconstruction of Changyuraptor yangi. Image credit: S. Abramowicz / Natural History Museum of Los Angeles County. Changyuraptor yangi: New Feathered Dinosaur Discovered in China Scansoriopteryx, a hatchling. Image credit: Matt Martyniuk / CC BY-SA 3.0. Scansoriopteryx Study Challenges Hypothesis that Birds Evolved from Dinosaurs More Paleontology news Paleontologists Recreate Walking Gait of 410-Million-Year-Old Spider Prehistoric Hedgehog, Tapir Species Discovered in Canada Dinosaurs of British Isles: New Dino-Book Pelagornis sandersi: Paleontologist Discovers Largest-Ever Flying Bird Remarkable New Dinosaur Tracksite Discovered in Alaska More Paleontology news Biology Tuco-Tuco: Four New Species of Gopher-Like Mammal Discovered in Bolivia This image shows Ctenomys tucumanus, a previously known species of tuco-tuco. Image credit: Er-wiki / CC BY-SA 3.0. A multinational group of scientists headed by Dr Scott Gardner of the University of Nebraska-Lincoln has described four new species of burrowing rodents from the South American genus Ctenomys. This image shows Ctenomys tucumanus, a previously known species of tuco-tuco. Image credit: Er-wiki / CC BY-SA 3.0. Commonly called tuco-tucos, these rodents are members of the family Octodontidae, although... read more... Litarachna lopezae. Image credit: Pešić V et al. New Species of Mite Discovered in Puerto Rico, Named after Jennifer Lopez Contents of a commercial packet of dried porcini containing three species new to science. Image credit: Bryn Dentinger. Three New Mushroom Species Found in Shop-Bought Packet More Biology news Chimpanzee Intelligence Depends on Genes, Finds New Study Scientists Use Satellite Imagery to Track Polar Bears Researchers Image Photosynthesis in Action New Catfish Species Discovered in Australia New Species of Miniature Fish Discovered in Rio Negro More Biology news Physics Higgs Boson, BICEP2 Results Could Point to New Physics beyond Standard Model The tiny temperature fluctuations of the cosmic microwave background, shown here as color, trace primordial density fluctuations in the early universe that seed the later growth of galaxies. Gravitational waves from inflation are expected to produce much a fainter pattern that includes twisting B-mode polarization, consistent with the B-mode polarization pattern observed by BICEP2, which is shown here as black lines. The line segments show the polarization strength and orientation at different spots on the sky. Image credit: BICEP2 Collaboration. Based on the discovery of the Higgs boson and the recent results from the BICEP2 collaboration, UK physicists have made a surprising prediction: the Universe should not have lasted for more than a second. The tiny temperature fluctuations of the cosmic microwave background, shown here as color, trace primordial density fluctuations in the early universe that seed the later growth of galaxies. Gravitational... read more... Digital art by Les Bossinas, Cortez III Service Corp., 1998. Australian Researchers Simulate Time Travel Higgs boson decays to four muons: lines denote other particles, and energy deposited is shown in blue. Image credit: CMS. Higgs Boson Decays to Fermions, CERN Study Confirms More Physics news Exciton: Physicists Detect Energy-Carrying Quasiparticle in Metal Physicists Find Way to Convert Light into Matter Extremely Rare Type of Iron Oxide Found in Ancient Chinese Pottery Ununseptium: Superheavy Element 117 Confirmed Ancient Egyptians Transported Large Objects over Wet Sand, Study Suggests More Physics news Medicine DENAQ: New Chemical Restores Light Perception to Blind Mice Section view of the human eye. According to scientists led by Dr Richard Kramer from the University of California, a chemical ‘photoswitch’ named DENAQ may be a potential drug for treating patients suffering from blinding diseases such as retinitis pigmentosa and age-related macular degeneration. Section view of the human eye. The retina has three layers of nerve cells, but only the outer layer contains the rod and cone cells... read more... Epilepsy is a brain disorder causing seizures that disturb brain activity. Image credit: Epilepsy Foundation. Hyaluronan: New Cause of Epilepsy Discovered Tarantula. Image credit: Michael Gäbler / CC BY 3.0. Tarantula Venom Could Lead to New Effective Painkillers More Medicine news Scientists Discover Odor Receptors in Human Lungs Molecular Pathway Discovery May Help Treat Psoriasis, Crohn’s Disease, Arthritis New Link Found between Stem Cells, Cancer Development Obesity is Inflammatory Disease, Rat Study Shows Study: Unique Combination of Antibiotics Kills Methicillin-Resistant Staphylococcus aureus More Medicine news Genetics Genetic Researchers Unveil Draft Sequence of Wheat Genome The common wheat, Triticum aestivum. Image credit: Matt Lavin, Bozeman, Montana / CC BY-SA 2.0. Scientists from the International Wheat Genome Sequencing Consortium have published a draft sequence of the genome of the common wheat (Triticum aestivum). The common wheat, Triticum aestivum. Image credit: Franz Eugen Köhler. The common wheat is a major dietary component for many populations across the world. Grown on more land than any other crop, more than 215 million hectares of wheat are harvested... read more... A still frame from the Patterson-Gimlin film, a famous motion picture of an unidentified subject filmed on October 20, 1967 by Roger Patterson and Robert Gimlin on Bluff Creek, a tributary of the Klamath River about 25 road miles north-west of Orleans, California. Bigfoot, Yeti? Hair Samples Match DNA from Paleolithic Polar Bear, Known Mammals Denisovans were probably dark-skinned, unlike the pale Neandertals. The picture shows a Neanderthal man. Image credit: Mauro Cutrona. Tibetans Inherit Super-Athlete Gene from Denisovans More Genetics news Genetic Researchers Solve Mystery of Electric Fish Genetic Researchers Sequence Genome of Eucalyptus grandis Domestic Sheep Genome Sequenced Kiwi Closely Related to Madagascan Elephant Birds Scientists Sequence Genome of Nevada Dampwood Termite More Genetics news Geology Three Ancient Volcanoes Discovered in Australia The newly discovered volcanic complex Cas Maar: upper - the wide asymmetrical maar, about 900 m across; middle - the eastern maar-rim sequence showing two layers of spattery lava; bottom - lower sequence of spattery lavas (left) and upper sequence of spattery lavas and scoriaceous tuff showing sharp contact between the two materials (right). Image credit: J. A. Boyce et al. Scientists at Monash University have announced the discovery of three previously unrecorded ancient volcanoes in the Hamilton area of the Newer Volcanics Province, Victoria, Australia. The newly discovered volcanic complex Cas Maar: upper – the wide asymmetrical maar, about 900 m across; middle – the eastern maar-rim sequence showing two layers of spattery lava; bottom – lower sequence... read more... This image shows a fragment of the 4.5 billion-year-old Tenham meteorite that contains tiny crystals of bridgmanite. Image credit: Chi Ma. Bridgmanite: Earth’s Most Abundant Mineral Named after Nobel Physicist View looking north at the Ice River Spring. Located in the polar desert of northern Ellesmere Island, Nunavut, this spring carves a gully remarkable similar to those observed on Mars. Image credit: Stephen Grasby. Canadian Scientists Discover Northernmost Perennial Spring
Posted on: Tue, 22 Jul 2014 16:33:44 +0000
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