Since the early 2000s, extensive astrometric observations of the sky began, which provided an accurate picture of the speed and direction of movement of stars. We began to see the Universe around us in dynamics. About 20 years ago, the first star leaving our galaxy was discovered. It turned out that there are quite a lot of runaway stars and most of them are heavy, the study showed. An example of a rogue star creating a shock wave as it moves through interstellar gas. Image source: NASA/JPL-Caltech
Source: 3dnews.ru