Recently, a map has been produced using position data of over 1 billion stars through the European Space Agency (ESA)'s Gaia mission. This map shows that our galaxy (Milky Way), like other spiral galaxies, has distinct spiral arms. The sun rising during the day and the bright stars visible at night are all located on one arm. The Gaia data supports the possibility that our galaxy has more than two spiral arms. The color of the thin disk of our galaxy mainly comes from dark dust, bright blue stars, and red emission nebulae. Gaia completed its mission and ceased operations last March. Data analysis is still ongoing.
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