could a black star swing around and accelerate wandering asteroids and comets; that would be a more frequent event, wouldn't it? what would be the likelyhood of

could a black star swing around and accelerate wandering asteroids and comets; that would be a more frequent event, wouldn't it? what would be the likelyhood of running into an object like that in our solar system? wouldn't the friction with interstellar medium brake an object like that before it gets out of a galaxy? > searches for extraterrestrial intelligence should check for radio signals coming from riders of hypervelocity stars howso? wouldn't the ejection/acceleration process disrupt the planets around a star? Still amazing how much action is happening in astrophysics these days.