Milky Way Animation | Gaia Space Telescope Data | European Space Agency FriendsofNASA.org: This is a new artist’s animation of our galaxy, the Milky Way, based on data from the European Space Agency’s Gaia space telescope. Gaia has changed our impression of the Milky Way. Even seemingly simple ideas about the nature of our galaxy’s central bar and the spiral arms have been overturned. Gaia has shown us that it has more than two spiral arms and that they are less prominent than we previously thou