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when evrything is relative in our world, how much its true that gravity is only the ABSOLUTE cause for pulling things down?

may be the atmosphere also play a part to sum extent or ......i dnt knw ...thts why i asked.

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    Jan 20 2012: Perhaps this is the type of thing you should study up on *before* coming to TED.
    Answers to such questions take literally seconds to find on google.
  • Jan 20 2012: Gravity is the only force acting in a downwards direction (e.g. towards the centre of the earth). If anything, the atmosphere has a very slight effect in pushing objects upwards - Archimedes principal re upthrust on bodies in a fluid - but it's so small to be practically unmeasurable.