Radar systems used by civilian airports and military operations are inadvertently revealing our existence to potential advanced alien civilizations, new research shows.
Astronomy
Jul 8, 2025
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31
Researchers have published the demonstration of a fully-integrated single-chip microwave photonics system, combining optical and microwave signal processing on a single silicon chip.
Optics & Photonics
Jun 5, 2025
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13
By carefully placing nanostructures on a flat surface, researchers at Linköping University, Sweden, have significantly improved the performance of so-called optical metasurfaces in conductive plastics. This is a major step ...
Nanophysics
May 21, 2025
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6
On March 1, NASA's Europa Clipper will streak just 550 miles (884 kilometers) above the surface of Mars for what's known as a gravity assist—a maneuver to bend the spacecraft's trajectory and position it for a critical ...
Space Exploration
Feb 25, 2025
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13
Academics from Northumbria University are part of an international research team which has used data from satellites to track changes in the thickness of the Greenland Ice Sheet.
Earth Sciences
Dec 20, 2024
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191
At night, charged particles from the sun caught by Earth's magnetosphere rain down into the atmosphere. The impacting particles rip electrons from atoms in the atmosphere, creating both beauty and chaos. These high-energy ...
Planetary Sciences
Dec 18, 2024
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86
Planet Earth is parting company with an asteroid that's been tagging along as a "mini moon" for the past two months.
Space Exploration
Nov 25, 2024
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98
Light pollution is more serious than expected: Moths not only lose their orientation directly under street lamps. Their flight behavior is also disturbed outside the cone of light.
Plants & Animals
Oct 9, 2024
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79
The effect of urbanization on temperature is relatively well-known: cities are often measurably warmer than their surrounding rural areas. This is called the urban heat island effect. What fewer people know is that the urban ...
Earth Sciences
Sep 9, 2024
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49
Researchers at ETH Zurich have managed to make sound waves travel only in one direction. In the future, this method could also be used in technical applications with electromagnetic waves.
General Physics
Sep 6, 2024
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