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robertogreco : lyra   1

Halcyon Maps | Constellations throughout the ages
"Though on the short timescale, stars appear to mantain nearly fixed positions in relation to each other, long-term observations show that all stars indeed move and all constellations gradually change over time.

This chart shows how the various constellations and asterisms on the night sky (namely the Big Dipper, Orion, Crux, Leo, Cassiopea and Lyra) changed throughout the human history and how will they look to an earth-based observer in the distant future, due to the proper motion of stars in our galaxy.

All data used to make this chart was gathered from the Hipparcos Catalogue, which was published in 1997 by the European Space Agency. It was a result of the 4-year long mission of the Hipparcos satellite. Visualization was achieved using the special astronomical software HippLiner."
contellations  astronomy  astrology  maps  mapping  time  timelines  history  constellationalthinking  perspective  observation  sterism  nightsky  skies  bigdipper  orion  crux  leo  cassiopea  lyra  motion  martinvargic 
march 2015 by robertogreco

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