Phys.org

Phys.org

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Phys.org is an online science, research and technology news aggregator which re-publishes press releases and stories from news agencies. In 2012, PhysOrg.com was changed to Phys.org. As of 2014, Phys.org was posting an average of 98 items per day. It is part of the Science X network of websites, headquartered on the Isle of Man.

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84% of buildings across 25 European cities fall below the nearby tree canopy linked to meaningful cooling. In most cities, more than half of buildings have less than 10% canopy within 60 meters, leaving a highly local heat deficit unresolved.

Hayabusa2 flew past asteroid Torifune in a test of the precise control a future deflection mission could require. If confirmed, the probe came within 800 meters—potentially one of the closest flybys of a near-Earth asteroid ever.

A 2,600-year-old tomb in China held bronze bells that appear to have been deliberately dismantled, not looted. The bells had been commissioned to summon ancestral protection against Chu, then seem to have been ritually deactivated after peace made that role unnecessary.

Up to 99% of a room-temperature helimagnet was driven into a single spiral handedness, providing direct microscopic evidence of magnetic chirality control in a material that avoids malfunction-causing crosstalk.

A new “CRASH Clock” shows low-Earth orbit could go from normal operations to a high-risk collision scenario in just days, under one disturbing condition. Read more via 🔗 in bio: https://sci.sx/702128224

A new metric, the CRASH Clock, asks a stark question: if every satellite instantly lost control, how long until two get dangerously close. In 2018, the answer was 164 days. By May 2026, it had fallen to about 2.5 days, driven largely by dense megaconstellations in low-Earth orbit. Maneuvers now occur roughly every two minutes for one major system, with hundreds of thousands of avoidance actions each year. Yet over a million lethal debris fragments remain too small to track, and each collision would generate more unmonitored fragments. The CRASH Clock does not predict a precise failure date. Instead, it quantifies how narrow the margin for error has become, especially if one specific kind of disruption hits at scale.

In this video: This animation shows active satellites and space debri

A new “CRASH Clock” shows low-Earth orbit could go from normal operations to a high-risk collision scenario in just days, under one disturbing condition. Read more via 🔗 in bio: https://sci.sx/702128224 A new metric, the CRASH Clock, asks a stark question: if every satellite instantly lost control, how long until two get dangerously close. In 2018, the answer was 164 days. By May 2026, it had fallen to about 2.5 days, driven largely by dense megaconstellations in low-Earth orbit. Maneuvers now occur roughly every two minutes for one major system, with hundreds of thousands of avoidance actions each year. Yet over a million lethal debris fragments remain too small to track, and each collision would generate more unmonitored fragments. The CRASH Clock does not predict a precise failure date. Instead, it quantifies how narrow the margin for error has become, especially if one specific kind of disruption hits at scale. In this video: This animation shows active satellites and space debri