You just might spot a little red or black triangle above the airplane seat. Usually, you can spot one or two of these ...
Abstract: Nowadays, in large cities there is a steady tendency to increase the spatial density of telecommunication systems. The saturation of the radio spectrum with analog and digital systems used ...
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130 million debris objects in orbit, one just cracked a spacecraft window
Microscopic space debris cracked the window of China’s Shenzhou-20 spacecraft in November 2025, delaying the crew’s return ...
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