When NASA’s New Horizons spacecraft flew past Arrokoth in 2019, scientists expected a simple, battered space rock. Instead, they found a bizarre, flattened contact binary with no impact craters, ...
In 2025, astronomers sharpened their view of the planetary system around Proxima Centauri — the sun's closest stellar ...
Two inexpensive commercial materials store solar energy as electrons and release hydrogen fuel on demand in darkness, requiring no external power and setting a new performance record.
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