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X-rays and AI reveal how spacecraft heat shields burn in real time
المصدر: Phys.org - latest science and technology news stories · نُشر
Heat shields are one of the most important parts of any spacecraft that intends to enter an atmosphere. And the material they are made of is critical. Improving them has been a challenge, though, as researchers typically only get "before" and "after" pictures of a heat shield's j
Heat shields are one of the most important parts of any spacecraft that intends to enter an atmosphere. And the material they are made of is critical. Improving them has been a challenge, though, as researchers typically only get "before" and "after" pictures of a heat shield's job of helping a spacecraft land safely back on Earth.
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Heat-induced nanoscale structures unlock electromechanical properties in ceramics
Scientists have developed a new way to make ceramic materials that can better withstand extreme heat and continue performing reliably in sensors and actuators. The approach creates tiny structures throughout the material that give it new electrical and mechanical properties.
Phys.org - latest science and technology news stories ·
A meteor hit Oklahoma 100 million years later than scientists thought
A meteor crater buried beneath Oklahoma has turned out to be nearly 100 million years younger than scientists thought. Zircon crystals show the Ames impact occurred about 370 million years ago, meaning it was not part of the mysterious Ordovician bombardment once linked to a poss
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ESA’s Juice just used Earth as a slingshot to Jupiter
ESA’s Juice spacecraft raced past Earth on September 28, using our planet’s gravity to dramatically reshape its path toward Jupiter without burning much fuel. The flyby changed its direction by 20 degrees and increased its speed by 3.5 km/s, while also giving scientists a rare ch
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Pompeii’s 2,000-year-old eruption just gave scientists a better clock for Earth’s past
Mount Vesuvius’ famous 79 CE eruption has given scientists a remarkably precise benchmark for dating events deep in Earth’s past. The improved technique could sharpen the timelines of volcanic eruptions, asteroid impacts, extinctions, and other major moments in geological history
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Bats may have first evolved in Europe 65 million years ago
A huge genomic and fossil study suggests bats first evolved in Europe around 65 to 60 million years ago before spreading across the globe. The findings also indicate that flight and echolocation emerged near the beginning of bat evolution, potentially helping explain how bats bec
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