Ever thought how big is the Universe? I bet it is bigger than our limits of imagination.
Check it out.
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An Unimaginable Scale
We all know Earth is huge. But where it stands on a cosmic scale? There are billions of Sun like stars in our Milkyway, and there are billions of Milkyway like galaxies in the VISIBLE UNIVERSE. Say if the Visible Universe is equivalent to all the sand found on Earth, then we are not more than a single grain of sand.
Watch and know it by yourself.
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Common Physics 