The RAVE project site: https://www.rave-survey.org/project/ In the above image taken from one of the RAVE DR5 video, surveyed stars are shown in 3D and color coded according to their positive or negative radial velocity relative to the Sun. I'm a bit puzzled that stars on one 'side' tend to run away from us whereas on the other 'side' they tend to come toward us. If the Sun is moving around the galactic center "with the flow" there should not be such a bias? Does that mean that the Sun moves noticeably faster (or slower) then the other stars or is this expected from the way velocities have been measured or computed? Looking closer at the stars in one of the fly through video we can see that not all stars follow the same trend. Some go one way while others in the same vicinity go the other way. This reminds me of another video i saw a few years back showing a simulation of stars formation in a dust cloud where you could see them 'dancing' around in very chaotic orbits - a bit like fire flies above a camp fire. If we keep surveying those stars, i guess that at some point in the future we will have enough data to actually infer their orbits - and create fascinating movies.