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Extent of Human Radio Broadcasts

December 4, 2012

Not even the light of humans have travelled further in our galaxy, so if there was a being on the other side of the Milky Way that could understand humanity, they would still have no idea that we are here. This is all just within our galaxy, and theres a universe of galaxies out there. 20121204-122648.jpg

A small patch of sky containing hundreds of galaxies. The universe is estimated to have more than 200 billion galaxies.

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From → Technology

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