Rising Satellite Traffic in Low Earth Orbit Sparks Collision Risk Concerns

Published

2 months ago

October 14, 2025

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A new study in Acta Astronautica warns that Low Earth Orbit is becoming dangerously congested. Since 2019, the number of satellites performing more than ten collision-avoidance maneuvers per month has risen sevenfold. With nearly 25,000 tracked objects and more launches planned, scientists fear a chain-reaction risk and call for stronger global coordination in orbital…

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Scientists Warn Southern Ocean Could ‘Burp’ Stored Heat, Delaying Global Cooling for 100 Years

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14 hours ago

December 1, 2025

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New modelling suggests the Southern Ocean could one day release the vast heat it has stored from greenhouse gas pollution. If CO₂ levels were pushed to net-negative, deep convection may trigger a sudden “thermal burp” that warms the planet for decades. Though idealised, the study shows how Antarctica’s surrounding seas could shape long-term climate outcomes.

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New Gravitational-Wave Signal May Reveal Primordial Black Holes Born After the Big Bang

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17 hours ago

December 1, 2025

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Scientists have spotted an unusual gravitational-wave signal that may reveal the universe’s first primordial black holes—tiny relics dating back to the Big Bang. Recorded by LIGO–Virgo–KAGRA in November 2025, the event involves an object far lighter than any known stellar remnant. If verified, it could reshape theories of black holes and dark matter.

Science

James Webb Space Telescope Finds Unexpected Ultraviolet Radiation Around Young Protostars

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17 hours ago

December 1, 2025

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Astronomers using the James Webb Space Telescope have detected unexpected ultraviolet radiation around five young protostars in the Ophiuchus molecular cloud. Since infant stars are not expected to emit UV light, the finding challenges long-standing star-formation models. Researchers ruled out external illumination from nearby stars, concluding the UV must originate w…

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Rising Satellite Traffic in Low Earth Orbit Sparks Collision Risk Concerns

Rising Satellite Traffic in Low Earth Orbit Sparks Collision Risk Concerns

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Science

Scientists Warn Southern Ocean Could ‘Burp’ Stored Heat, Delaying Global Cooling for 100 Years

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New Gravitational-Wave Signal May Reveal Primordial Black Holes Born After the Big Bang

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James Webb Space Telescope Finds Unexpected Ultraviolet Radiation Around Young Protostars

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News IO

Rising Satellite Traffic in Low Earth Orbit Sparks Collision Risk Concerns

Rising Satellite Traffic in Low Earth Orbit Sparks Collision Risk Concerns

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Scientists Warn Southern Ocean Could ‘Burp’ Stored Heat, Delaying Global Cooling for 100 Years

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