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Two attosecond flashes capture electrons in motion

Electronic motion sets the stage for virtually every light-induced process in nature, from the first step of a chemical reaction to the flow of charge in a solid. Yet these processes unfold so rapidly that they can be observed only with flashes of light lasting a few...

A distant primordial object may be a newborn ‘Little Red Dot’

The infrared-sensitive James Webb Space Telescope (JWST) has conducted multiple surveys of the very distant universe, digging into what was happening in the first billion years after the Big Bang. As part of these deep surveys, its sensors have been picking up...