What could happen if Putin used nuclear weapons in Ukraine?

The veiled threat to use nuclear weapons in ukraine launched by the Russian president, Vladimir Putinshould Russia’s “territorial integrity” be threatened, sparked intense discussions in the West about a possible response. “When the territorial integrity of our country is threatened, we will certainly use all means at our disposal to …

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Why will the DART mission crash into an asteroid? we explain

NASA explains how the DART mission would prevent an “Armageddon” 2:30 (CNN) — A NASA spacecraft will deliberately crash into an asteroid called Dimorphos this Monday. The DART mission, or Double Asteroid Redirection Test, aims to test whether this type of kinetic impact can help deflect an asteroid that poses …

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