See my blog for info about this http://blog.akademy.co.uk/2016/09/gaia-star-data-with-d3-part-2-prettier-faster/
See an animated simpler version here: http://vis.akademy.uk/gaia/stars.html
It might take a while to generate this, please be patient...
This work has made use of data from the European Space Agency (ESA) mission Gaia (http://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, http://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement.