X-ray four-wave mixing captures elusive electron interactions inside atoms and molecules

Scientists at the X-ray free-electron laser SwissFEL have realized a long-pursued experimental goal in physics: to show how ...
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Silicon and carbon could explain Earth’s onion-like inner core

Deep beneath our feet, far beyond the reach of drills or submersibles, Earth hides a solid metal heart that behaves in ways geophysicists have struggled to explain. New experiments now suggest that a ...
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NASA’s MOXIE device completes final oxygen-making experiment on Mars

KENNEDY SPACE CENTER — After completing its 16th and final test of generating oxygen in the mostly carbon dioxide atmosphere of Mars, MOXIE will leave a legacy for its bigger future descendants, says ...