How many arms does our Galaxy have?
2x major 2x minor = 4
Gaia’s all-sky view of our Milky Way Galaxy and neighbouring galaxies, based on measurements of nearly 1.7 billion stars.
The map shows the total brightness and colour of stars observed by the ESA satellite in each portion of the sky between July 2014 and May 2016.
The Large Magellanic Cloud (LMC), one of the nearest galaxies to our Milky Way, as viewed by ESA’s Gaia satellite using information from the mission’s second data release. (src)
360 View:
Links:
https://www.esa.int/spaceinimages/Missions/Gaia
https://www.cosmos.esa.int/web/gaia/home
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