Astronomers have long voiced concerns about Starlink's satellite constellation interfering with observations of the universe, and a new survey by Curtin University confirms those fears. ... Read full Story
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Scientists have released nine dazzling images from NASA's Chandra X-ray Observatory, blending data with the Hubble and James Webb space telescopes to reveal black holes, star clusters and distant galaxies like never before. ... Read full Story
Aug. 2, 2025: Our weekly roundup of the latest science in the news, as well as a few fascinating articles to keep you entertained over the weekend. ... Read full Story
The technological singularity — the point at which artificial general intelligence surpasses human intelligence — is coming. But will it usher in humanity's salvation, or lead to its downfall? ... Read full Story
Physicists have used a machine-learning method to identify surprising new twists on the non-reciprocal forces governing a many-body system. ... Read full Story
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Federal officials seized 3,000 copies of Scientific American in 1950 in a “red scare” era of attacks on science. The move backfired, and offers lessons for today ... Read full Story
Scientists have filmed odd communities of life flourishing deeper in the ocean than ever before. The chemosynthesis-based life-forms get their energy from chemical reactions, powered by gases seeping out of faults on the seafloor. ... Read full Story
Neutrinos are fundamental particles characterized by no electric charge and very small masses, which are known to interact with other matter via the weak force or gravity. While these particles have been the focus of numerous research studies, the processes through which they acquire their masses have not yet been elucidated. ... Read full Story
Researchers have mapped out the neural pathway that humans use to perceive cool temperatures and found that it's separate from the one for sensing heat. ... Read full Story
Merriam-Webster's Word of the Day for August 2, 2025 is:
palimpsest \PAL-imp-sest\ noun
Palimpsest in its original use refers to writing material (such as a parchment manuscript) used one or more times after earlier writing has been erased; the underlying text is said to be “in palimpsest.” Palimpsest in extended use refers to something that has usually diverse layers or aspects apparent beneath the surface.
// Scholars believe the motive for making palimpsests was often economic—reusing parchment was cheaper than preparing a new skin.
// The ancient city is an architectural palimpsest.
“My aim was to trace the course of … the Aqua Marcia, built between 144 and 140 B.C. by Julius Caesar’s ancestor Quintus Marcius Rex. … The original tuff arches carried the Marcia across a steep ravine. Subsequent retaining walls and buttresses have transformed the bridge into a palimpsest of building styles.” — David Laskin, The New York Times, 24 Apr. 2024
Did you know?
Long ago, writing surfaces were so highly valued that they were often used more than once. Palimpsest in its original use referred to an early form of recycling in which an old document was erased to make room for a new one when parchment ran short. (The word is from the Greek palimpsēstos, meaning “scraped again.”) Fortunately for modern scholars, the erasing process wasn’t completely effective, so the original could often be distinguished under the newer writing. De republica, by Roman statesman and orator Cicero, is one of many documents recovered from a palimpsest. Nowadays, the word palimpsest can refer not only to such a document but to anything that has multiple layers apparent beneath the surface.