Gravitational distortions produced by distant galaxies show a slight—but notable—disagreement with Einstein's predictions.

New research suggests black holes are unstable, challenging Einstein's theory of general relativity and the Kerr solution.

Find out more about available formats and browse any associated online resources. Einstein's theory of general relativity is a cornerstone of modern physics. It also touches upon a wealth of topics ...

Here we explore what the theory of general relativity is and how it affects space-time. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

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Albert Einstein's general theory of relativity is one of the towering achievements of 20th-century physics. In our introduction to general relativity, we explain how this theory developed ...

The last time Iranian news media published photographs of General Ghaani was two days after Israel killed the leader of Hezbollah, Hassan Nasrallah, on Sept. 27 in Lebanon, according to photos ...

The UN General Assembly (UNGA) is the main policy-making organ of the Organization. Comprising all Member States, it provides a unique forum for multilateral discussion of the full spectrum of ...

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If you’re looking to dramatically change a room but don’t want to spend a lot of money, time, or even be especially committed to the results, consider removable wallpaper — specifically the ...