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Cosmic distances are a lot bigger than they may seem, and light has to cross that path in order for us to see stars and everything. Here i explain what would our planet look like from Andromeda and how big would the mirror of the telescope need to be.

The idea for the video was given by Der Tery (through a comment).

Sizes of the telescopes calculated through the help of this article: http://www.askamathematician.com/2013...

Footage gathered through a space simulation: Space Engine.

Music: Atlantis - Audionautix
Kevin MacLeod - Lost Frontier
Kevin MacLeod - Ritual