BBC The Sky at Night - Mapping the Milky Way (2021)

The Gaia space telescope is not just create the ultimate star map of the Milky Way. It is also showing us our galaxy's past and how it will change in the future.

The Sky at Night team takes a look at the history of astrometry and meets the scientists now able to prove that change is the only constant in the universe.

Also contains a short tribute to Michael Collins.

BBC Site

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