Scientists have detected ripples in space-time from the violent collision of two massive black holes that spiralled into one another far beyond the distant edge of the Milky Way.
The black holes, each more than 100 times the mass of the sun, began…
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Human-Constructed Dams Have Shifted the Earth’s Poles, Scientists Say
Humans have built so many dams around the world that the Earth’s poles have wandered away from the planet’s rotational axis, new research suggests.
Over the last 200 years, humans have constructed…
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The Second and Third Data Releases from the UKIRT Hemisphere Survey
This paper describes the second and third data releases (DR2 and DR3, respectively) from the ongoing United Kingdom Infrared Telescope Hemisphere Survey (UHS). DR2 is primarily comprised of the K-band portion of the UHS survey, and was released…
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ABYSS. III. Observing Accretion Activity in Young Stars Through Empirical Veiling Measurements
Stellar accretion plays an important role in the early stages of stellar evolution, particularly in Classical T Tauri Stars (CTTSs). Accretion of a CTTS can be related to different physical parameters such as effective temperature (Teff), age,…
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Deep Reinforcement Learning for Efficient Scheduling of Ground-based Astronomical Observations
Ground-based astronomical observations face inherent challenges from weather changes, target visibility window constraints, and observational requirements. Enhancing the efficiency and effectiveness of telescope operations has long been a key…
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Semiempirical versus Theoretical Stellar Population Models: A Comparison with Star Clusters
Stellar population synthesis (SPS) models are a key tool for deriving the age, metallicity, radial velocity, and reddening of star clusters from their integrated spectra. Using a sample of 129 star clusters with high-quality spectra, we analyze…
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The World’s Biggest Waterfall Is Hiding in the Ocean… And It’s Far Bigger Than Niagara Falls!
In a world where towering waterfalls like Niagara Falls and Angel Falls capture our imagination, there is one waterfall so vast, yet hidden, that it dwarfs all others. Found beneath the cold waters of the Arctic, the Denmark Strait cataract,…
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This Ancient Child Wasn’t Fully Human—Scientists Now Believe She Was Something Else
A 140,000-year-old skull discovered in Skhul Cave on Mount Carmel, Israel, may represent one of the most significant findings in human evolutionary history. According to a new anatomical analysis, the cranium likely belonged to a 5-year-old girl…
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Is Intelligence Genetic? Scientists Discover Heritable Brain State That Powers Cognitive Flexibility
Brain dynamics and cognition share genetic roots. Criticality may guide future brain health research. A recent study published on June 24 in PNAS presents strong evidence that brain criticality—the delicate balance between neural excitation and…
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