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Scientists distinguish between weight and mass, which may seem pedantic until you see what happens on a world where gravity is radically different to Earth’s

The world’s biggest digital camera telescope has started ...

Q How often does the Tower Bridge in London open? A The bridge operators say that, on average, it opens roughly 800 times a year. Captains of ships which require to pass through the bridge need to giv

What the scientists are saying… The prince ...

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