NASA is keeping Voyager 1 alive by switching off instruments and heaters one by one—but it cannot let the spacecraft become so cold that its fuel lines freeze. If those lines fail, Voyager could lose the thrusters that keep its antenna aimed at Earth, per

Dark energy flips its sign, but the Hubble tension refuses to budge

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Scientists say coldest 'stars' in Milky Way could actually be giant alien technology harvesting energy th

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The “Hobbits” Mysteriously Disappeared 50,000 Years Ago

Octopus Brains Defy a Long-Held Rule About Why Animals Evolve Intelligence

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Staffing the moon base: How many astronauts should live in NASA's lunar outpost?

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When a deep-sea robot ventured down into the Atlantic's Doldrums, it found something massive no one expected