A transparent skull floating in the void of space: this is the astonishing vision offered by the James Webb Space Telescope, which captured a nebula evoking a brain imprisoned in its cranial ...

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Webb has captured the haunting “Exposed Cranium” nebula—an otherworldly cloud shaped by a dying star that looks remarkably like a brain inside a skull.

On Earth, gravity constantly pulls fluids in your body and your brain toward the center of the Earth. In space, that force disappears. Body fluids shift toward the head, which gives astronauts a puffy ...