Like a supersonic jet being blasted with high-speed winds, Earth is constantly being bombarded by a stream of charged particles from the sun known as solar wind.
Planetary Sciences
Aug 2, 2024
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224
Tachyons are hypothetical particles that travel at speeds greater than the speed of light. These superluminal particles, are the "enfant terrible" of modern physics. Until recently, they were generally regarded as entities ...
Quantum Physics
Jul 11, 2024
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Space storms could soon be forecast with greater accuracy than ever before thanks to a big leap forward in our understanding of exactly when a violent solar eruption may hit Earth.
Astronomy
Jul 19, 2024
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111
Do constants of nature—the numbers that determine how things behave, like the speed of light—change over time as the universe expands? Does light get a little tired traveling vast cosmic distances? It was believed that ...
Astronomy
Jul 9, 2024
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A pair of astrophysicists from Ciudad Universitaria and Universidad Complutense de Madrid, both in Spain, report evidence that comet A117uUD was put on its current "hyperbolic trajectory" when it passed close to Saturn two ...
How do we measure chaos and why would we want to? Together, Penn engineers Dani S. Bassett, J. Peter Skirkanich Professor in Bioengineering and in Electrical and Systems Engineering, and postdoctoral researcher Kieran Murphy ...
General Physics
Jul 30, 2024
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98
A new tool that can be used to predict the emergence of unusually large and unpredictable waves at sea—known as rogue waves—up to five minutes into the future is presented in a study published in Scientific Reports. The ...
Earth Sciences
Jul 18, 2024
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31
A team of engineers and zoologists affiliated with several institutions in Japan has developed a new way to study riblet denticles on shark skin. In their study, published in the Journal of the Royal Society Interface, the ...
When it comes to discoveries about our upper atmosphere, it pays to know your surroundings.
Planetary Sciences
Jul 23, 2024
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9
Mountain hikes are invigorating. Crisp air and clear views can refresh the soul, but thin air presents an additional challenge for high-altitude birds. "All else being equal, bird wings produce less lift in low density air," ...
Plants & Animals
Aug 1, 2024
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