Ripples from a Star

Scientists were attempting to find planets forming around a star when they noticed waves moving at 35,000 km/h and sometimes up to 40,000 km/h. They found the the outermost ones are moving faster than the rest, and some are moving fast enough to escape from the gravitational pull from the star. One possible cause of these waves is the star's flaring activity.

Wave movement over the course of four years

Source: http://www.scientificamerican.com/article/astronomers-spy-unexplained-ripples-racing-through-an-infant-solar-system/