A stunning image from the James Webb Space Telescope revealing concentric angular rings around a giant, distant star stirred a frenzy online in September. "It must be aliens," some geeks speculated.

MR. G. W. WALKER tells me that he has sent to NATURE his interesting problem of the mutual attraction between two uniform concentric hemispherical shells, bounded by a common diametral plane. The ...

The research on multi-component nanoaggregates is very active and spans many different fields. High-entropy alloy nanocrystals, consisting of nanometre-sized solid solutions of five or more elements, ...