Researchers saw repeated outbursts — every 114 days, on average — in a galaxy some 570 million light-years away from Earth. Here outburst because of black hole draws mass off from the galaxy?
Location: Galaxy ESO 253-3.
Why does black hole draw off some mass from orbiting star instead of sucking it? As we all know black hole sucks things instead of weird behavior like this.
Black holes do not swallow and rip apart everything that passes close to it. Instead, black holes pull on the orbiting star, turning it into a "teardrop" shape at closest approach. The tidal forces acting upon the star are high enough for the star to begin losing mass to the black hole. However, as the star only is close to the black hole for only a short period of time, only 3 Jupiter masses of gas is stripped away from the star (check here). If the star were closer, more mass would be sucked away from the star, making mass loss faster.
Black holes don't "suck things in", they pull on things gravitationally with their mass, same as any other object. You might as well ask why the Sun doesn't suck the Earth in. The natural thing is for objects to orbit, not collide with, stars or black holes.
