The Euclid space telescope has, by chance, discovered its first Einstein ring, and it is absolutely stunning. Beyond its aesthetic appeal, this perfectly circular Einstein ring has allowed researchers ...

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Russia's opening gambit ahead of expected peace talks has been laid out in the media, says our Moscow correspondent Ivor Bennett. "There has been a lot of talk about potential meetings and contact ...

The Thomas Walther Collection—341 photographs by 148 artists—represents the innovative vision of the 1920s and ’30s, a transformative period of modern photography and the foundation of our photo-based ...