Weighty mission for scientists: redefine the kilo

Weighty mission for scientists: redefine the kilo

Scientists said Monday they were moving closer to coming up with a non-physical definition of the kilo after discovering the metal artefact used as the international standard had shed a little weight.

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Experts Unsure When Betelgeuse Will Explode

Just like out of a good science fiction setting on some far-off planet, our own Earth could soon have a second sun, but only for a limited time. The cosmic phenomenon will occur when one of the brightest stars in our night sky suffers a cataclysmic event -- exploding into a supernova. The supergiant red star Betelgeuse in Orion’s nebula is predicted to explode, with the impending supernova ...

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