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The wavy pattern seen in Gaia data (Gaia Data Release 3)

Full description in this story: https://www.cosmos.esa.int/web/gaia/d... Animation created for Gaia's data release 3 on 13 June 2022: https://www.cosmos.esa.int/web/gaia/d... This video contains an animated infographic which explains how the wavy pattern arises in a plot of proper motion along galactic longitude versus galactic longitude, where the plot is made for the selection of young disk ('OBA') stars from the paper "Gaia Data Release 3: Golden Sample of Astrophysical Parameters" by the Gaia Collaboration, Creevey, O.L., et al. The video starts out orienting the viewer with the aid of the Gaia Early Data Release 3 all-sky image of the brightness and colours of the stars. The relation with the Milky Way disk is made and then an animation follows which shows how the way the stars and the sun collectively revolve around the Milky Way centre gives rise to the pattern seen in the above described plot. Credits: ESA/Gaia/DPAC License: CC BY-SA 3.0 IGO - https://creativecommons.org/licenses/... Acknowledgements: Based on the paper by the Gaia Collaboration: Gaia Data Release 3: A Golden Sample of Astrophysical Parameters Gaia Data Release 3 was published on June 13, 2022 Main Video/Data sets: ESA/Gaia/DPAC, Anthony Brown, Yves Frémat, Orlagh Creevey, Rosanna Sordo, Céline Reylé, Tineke Roegiers Narrator: Orlagh Creevey Ideas for video inspired by: Brunetti & Pfenniger, 2010, A&A 510, A34 Night sky image: ESA/Gaia/DPAC/André Moitinho, CC BY-SA 3.0 IGO Milky Way image: Stefan Payne-Wardenaar The video was created with Processing, Python/Matplotlib/Cartopy, FFmpeg, and GNU Bash Code at: https://github.com/agabrown/milkyway-...