AHA! WITHOUT BORDERS · Discover science

Hammer or feather?

On the Moon, your intuition may let you down.

Imagine you are standing on the Moon. You hold a hammer in one hand and a feather in the other. You let go of both at the same time from the same height. Which one reaches the surface first?

Your guess

Try another mystery

A small wizard figure on a table, a lantern and a huge shadow on the wall

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Small figure, giant shadow

Can you make a shadow bigger without the figure growing? Move it and find out what matters.

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Underwater scene with a red, a blue and a white plate on a holder and a brass lamp

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Where does red go?

Sink colourful objects into the deep. Then switch on a torch. What changes?

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