On March 12, a defunct Nasa satellite, weighing nearly 600kg, fell from orbit and burned up over the Pacific. It had run out fuel in 2019. Estimates show at least three such old satellites fall back ...

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The temperature is inching upward through the 30˚s this morning, proportionate to the late-winter sun climbing the southern sky. It’s all blue above and mostly white below, but the forest floor is ...

Abstract: Liquid metal batteries are one of the most attractive power source candidates for grid energy storage due to their high capacity, low cost and long life. However, the heat generation ...