Space
Asteroid belt may bear scars of planets’ migration
The giant planets are thought to have moved out of their original orbits billions of years ago – the shifts may be recorded in the asteroid belt
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The giant planets are thought to have moved out of their original orbits billions of years ago – the shifts may be recorded in the asteroid belt
The sun is about 400 times as wide as the moon, but it is also 400 times further away. The two therefore look the same size in the sky – is it more than a coincidence?