File:The Sagittarius dwarf galaxy in Gaia's all-sky view ESA399651.jpg

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English: The Sagittarius dwarf galaxy, a small satellite of the Milky Way that is leaving a stream of stars behind as an effect of our Galaxy’s gravitational tug, is visible as an elongated feature below the Galactic centre and pointing in the downwards direction in the all-sky map of the density of stars observed by ESA’s Gaia mission between July 2014 to May 2016.

Scientists analysing data from Gaia’s second release have shown our Milky Way galaxy is still enduring the effects of a near collision that set millions of stars moving like ripples on a pond. The close encounter likely took place sometime in the past 300–900 million years, and the culprit could be the Sagittarius dwarf galaxy.

Full story: Gaia hints at our Galaxy’s turbulent life
Date
Source http://www.esa.int/spaceinimages/Images/2018/09/The_Sagittarius_dwarf_galaxy_in_Gaia_s_all-sky_view
Author European Space Agency
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(Reusing this file)		 ESA/Gaia/DPAC,CC BY-SA 3.0 IGO
Title
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The Sagittarius dwarf galaxy in Gaia's all-sky view
Mission
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Gaia
Activity
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Space Science

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This file is licensed under the Creative Commons Attribution-ShareAlike 3.0 IGO license.
Attribution: ESA/Gaia/DPAC
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Date/TimeThumbnailDimensionsUserComment
current13:50, 3 April 2019Thumbnail for version as of 13:50, 3 April 20194,300 × 2,708 (1.9 MB)Fæ (talk | contribs)European Space Agency, Id 399651, http://www.esa.int/spaceinimages/Images/2018/09/The_Sagittarius_dwarf_galaxy_in_Gaia_s_all-sky_view, User:Fæ/Project_list/ESA

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