April 9, 2015 | Dominique

One of my favourite things in the Science Museum is our piece of Moon rock. People have been studying the Moon for a very long time, but a clear theory about its origins has proved hard to pin down.

Latest simulations support the idea that another planet collided with the young Earth, producing debris that became the Moon. Similarities between the Moon and Earth imply this other planet was very much like Earth - perhaps a nearby sister planet.

Thanks to the work of astrophysicists, we are now closer than ever to understanding where the Moon came from.

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Earth and moon

The odds of the Moon being made up of debris from a planetary collision have shot up from 1% to 20-40%.

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Image: NASA Commons

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