1.4-Million-Year-Old Stone Tools Found in Ukraine Document Earliest Hominin Occupation of Europe
Archaeologists have dated an assemblage of ancient stone tools excavated from the archaeological site of Korolevo on the Tysa River in western Ukraine at 1.42 million years old. As such, these artifacts — which are associated with Homo erectus — provide the earliest evidence of hominins in Europe and support the hypothesis that the continent
Giant Fossil Whale Perucetus Did Not Exceed Body Mass of Today’s Blue Whales: Study
Paleontologists from the University of California, Davis, and Smithsonian Institution’s National Museum of Natural History estimate that Perucetus colossus, a giant basilosaurid whale from the Eocene of Peru, weighed 60-70 tons assuming a length 17 m. Reconstruction of Perucetus colossus in its coastal habitat; the associated sawfish, Pristis, was recovered from the same unit in
Asteroid Moonlet Dimorphos May Have Been Reshaped Following Impact from NASA’s DART Mission
On September 26, 2022, NASA’s Double Asteroid Redirection Test (DART) mission successfully impacted Dimorphos, the natural satellite of the binary near-Earth asteroid Didymos. New numerical simulations indicate that the DART impact caused global deformation and resurfacing of Dimorphos. The asteroid moonlet Dimorphos as seen by NASA’s DART spacecraft 11 seconds before impact. DART’s on board
Miniature Cyprinid Fish Can Produce Sounds over 140 dB, Ichthyologists Say
Danionella cerebrum , a translucent fish species of only 12 mm length, produces high amplitude sounds exceeding 140 dB (re. 1 µPa, at a distance of one body length) — comparable to a jet engine during take-off in 100 m distance. Danionella cerebrum has a pair of extrinsic, indirect sonic muscles that house the drumming
Webb Finds Surprisingly Massive Black Hole in Early Universe
Using the NASA/ESA/CSA James Webb Space Telescope, astronomers have observed an extremely red, quasar-like object — named A2744-QSO1 — behind the strongly lensing galaxy cluster Abell 2744. Its colors suggest that the black hole in A2744-QSO1 lies behind a thick veil of dust obscuring much of its light. The researchers have also measured the black
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