Physicists propose that high-energy photon jets from collapsing stars may be secret factories of heavy elements like ...

Inside the National Institute of Standards and Technology, or NIST, a new atomic clock named NIST-F4 has begun to tick — not ...

But do you know which country possesses the largest nuclear bomb in the world and how much damage it can cause? In August 1945, America dropped atomic bombs on the Japanese cities of Hiroshima and ...

Putin signed a revamped version of Russia's nuclear doctrine in November, spelling out the circumstances that would allow him to use the world's largest atomic arsenal. The document gave that ...

Mr Putin signed a revamped version of Russia’s nuclear doctrine in November, spelling out the circumstances that would allow him to use the world’s largest atomic arsenal. The document gave ...

Iran has since far exceeded the 2015 agreement's curbs on its uranium enrichment, and European countries share Washington's concern Tehran could seek an atomic bomb. Iran has said its programme is ...

Mr Putin signed a revamped version of Russia’s nuclear doctrine in November, spelling out the circumstances that would allow him to use the world’s largest atomic arsenal. Moscow is due to mark the ...

In the latest exchange, 205 prisoners of war have been returned from Russia and Ukraine, according to Moscow. The Kremlin's Ministry of Defence said the United Arab Emirates helped to mediate the ...