Dec. 19 (UPI) -- Comet 3I/ATLAS passed its nearest point to Earth early Friday and approaching within 168 million miles. Dec. 17 (UPI) -- Billionaire entrepreneur and private astronaut Jared Isaacman ...

Also: A surprising connection between whale calls and special relativity, tiny sound-powered drones, and more.

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SD: Researchers have found that some dogs are more likely to tilt their heads when they hear words they recognize. AC: Wait, ...

A new advance in polycrystalline graphene research is reviving the possibility of a space elevator, a decades-old concept ...

SpaceX's Starlink and AI-based face replacement tech among this year's winners.