Earth’s Gravity Pictured in ‘HD’
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If you’ve ever wondered about the effects gravity and just how many things it influences, there is some great research going on that answers a lot of those questions. As part of the research, they have produced a global map of gravitational pull metrics.
This colourful new map traces the subtle but all pervasive influence the pull of gravity has across the globe. Known as a geoid, it essentially defines where the level surface is on our planet; it tells us which way is “up” and which way is “down”. It is drawn from delicate measurements made by Europe’s Goce satellite, which flies so low it comes perilously close to falling out of the sky.
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