BE­HIND THE SCENES

THE SKY AT NIGHT IN MAY BBC Four, 13 May, 10pm (first re­peat BBC Four, 17 May, 7.30pm)*

Sky at Night Magazine - - BULLETIN -

A GA­LAC­TIC REV­O­LU­TION

The Gaia mis­sion is a project headed by the Euro­pean Space Agency to make a 3D map of the Galaxy by study­ing over a thou­sand mil­lion stars. Fol­low­ing Gaia’s sec­ond data re­lease, Chris and Mag­gie find out what we’ve learned and what it might re­veal about the for­ma­tion and evo­lu­tion of our Galaxy.

*Check www.bbc.co.uk/sky­at­night for sub­se­quent re­peat times

Gaia is ex­pected to dis­cover hun­dreds of thou­sands of new ce­les­tial ob­jects

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