Counting single photons at unprecedented rates

In high-end 21st century communications, information travels in the form of a stream of light pulses typically traveling through fiber optic cables. Each pulse can be as faint as a single photon, the smallest possible unit ...

'Yellowballs' offer new insights into star formation

A serendipitous discovery by citizen scientists has provided a unique new window into the diverse environments that produce stars and star clusters, revealing the presence of "stellar nurseries" before infant stars emerge ...

US pauses J&J vaccine in blow to global immunization drive

US health authorities on Tuesday recommended pausing the Johnson & Johnson COVID shot over blood clot fears, with the company quickly announcing it would delay its European rollout, in a setback for global immunization campaigns.

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