Using the Immersion GRating INfrared Spectrometer (IGRINS) at the Gemini South Observatory on Cerro Pachon, Chile, astronomers have measured carbon-to-hydrogen (C/H) and oxygen-to-hydrogen (O/H) abundance ratios in the atmosphere of the hot-Jupiter exoplanet WASP-77Ab.
An artist’s impression of a hot-Jupiter exoplanet. Image credit: Sci-News.com.
WASP-77Ab is a tidally-locked gas giant about 1.2...
A team of researchers from the United States and Austria has analyzed remnants of ancient asteroids and modeled the effects of their violent collisions to show that the strikes took place more often than previously thought and may have affected oxygen levels in the atmosphere of Earth in the Archean Eon, 2.5 to 4 billion years ago. The findings appear in the journal Nature Geoscience.
An amethyst gemstone seal from the Second Temple period has a unique engraving: a bird and a branch with five fruits, according to the Israel Antiquities Authority (IAA).
The 2,000-year-old amethyst seal found in Jerusalem, Israel. Image credit: Israel Antiquities Authority.
The 2,000-year-old seal was discovered in the bedrock foundations of the Western Wall in Jerusalem, Israel.
The tiny artifact...
Pterosaurs reached only modest sizes in the Triassic and Jurassic periods. By contrast, the Cretaceous period saw a trend toward large to giant size (2 m to over 6 m wingspans), and while small-medium (less than 1 m to 2 m wingspans) sized forms are known from the Early Cretaceous epoch they are rare in the Late Cretaceous epoch. It had been previously thought that the smaller species were outcompeted...
New research demonstrates that two common, widespread, and endemic Patagonian bird species — the chucao tapaculo (Scelorchilus rubecula) and the black-throated huet-huet (Pteroptochos tarnii) — regularly consume fruiting bodies (truffles) of mycorrhizal fungi and disperse viable spores via mycophagy.
Patagonian birds disperse viable spores of mycorrhizal fungi. Image credit: Caiafa et...
Physicists from CERN’s LHCb (Large Hadron Collider beauty) Collaboration have carried out new tests of lepton universality, one of the basic principles of the Standard Model of particle physics. This principle states that the Standard Model treats the three charged leptons — electrons, muons and taus — identically, except for differences due to their different masses. The new measurements...Mastervision Ayda Wall Mount Push Pin Bulletin Board, 18" x 24",
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Green tea is one of the most widely consumed beverages worldwide. Green tea catechins are associated with a delay in aging. In experiments performed in Caenorhabditis elegans nematodes, scientists from ETH Zurich and elsewhere investigated the impact of the most abundant green tea catechins, epigallocatechin gallate (EGCG) and epicatechin gallate (ECG), on health and aging.
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A team of researchers from the Okinawa Institute of Science and Technology Graduate University and University College London has decoded the genome of Bruguiera gymnorhiza, one of the most widely distributed mangrove trees from the most mangrove-rich family Rhizophoraceae. The new data provide novel insights into the epigenome regulation of mangroves and a better understanding of the adaptation of...Anomalous Materials
New research from the University of Adelaide sheds light on why cold eclogites — high-pressure, metamorphic rocks that consist primarily of garnet and omphacite — mysteriously disappeared from geological records during the early stages of the Earth’s development.
The supercontinent Nuna about 1.59 billion years ago. Image credit: Alexandre DeZotti.
“Cold eclogites mysteriously disappeared...
Homo bodoensis lived in Africa during the early Middle Pleistocene, around 500,000 years ago, and was the direct ancestor of the Homo sapiens lineage; however, this species was not the most recent common ancestor of Eurasian (Neanderthals and Denisovans) and African (Homo sapiens) hominins.
Homo bodoensis had a pan-African distribution with the peripheral range extending into the eastern Mediterranean...