This ESA video reveals the evolution of stars in our Galaxy over the past million of years. It starts from the positions of stars in the sky 1 035 000 years ago, which were calculated using data from the Tycho-Gaia Astrometric Solution, or TGAS, one of the products of the first Gaia data release. The video follows the evolution of stellar positions until the present day, ending with a view of the sky as measured by Gaia between 2014 and 2015.

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