What is atmospheric pressure?

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

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JD Savage investigates a mysterious, invisible force that rules the universe. Just watch out it doesn’t pull you in!

There’s much more to this essential piece of flight safety equipment than a simple tug on a rip cord

There’s a reason why Earth has seasons – and it’s about being totally tilted.