there not attractive because they are practically incisible to the human eye
Yes and no. It is rather hard to explain, because black holes are so dark and black that no living creature can see them, which in a sense makes them invisible, but you can also see where a black hole is because it sucks in light, too, so that would also, in a sense make it visible, but the my main answer would be, no black holes are not invisible.
Black holes are regions in space where gravity is so strong that nothing, not even light, can escape from them. Once something crosses the "event horizon" of a black hole, it is trapped inside. This makes black holes very mysterious and fascinating objects in the universe.
Black holes are regions in space where gravity is so strong that not even light can escape. This makes them invisible to telescopes that rely on light to observe objects in space. Instead, scientists study the effects of black holes on nearby objects to indirectly learn about them.
Not all do - most black holes have masses comparable to that of a star; this makes sense, since they are believed to have formed from collapsing stars. There are, however, black holes that have thousands, millions, or even billions of times the mass of our Sun - called intermediate black holes, or (for about a million solar masses or more), supermassive black holes. It is currently unknown how exactly they got so massive.
Black holes. They can be so large that they can suck up universes at a time
he was the first black president
Black holes were stars that were so massive that they collapsed on itself. The gravity in black holes is infinite and more you get closer to it, more time gets slower. Black holes suck all matter that is too close. Even light can't escape Black holes.
Black Hole simply cannot be destroyed because Black holes have so much Gravity That even light cannot pass or go from near the black holes. Black Holes pull the object passing from 10,000,00 (10 Lakh) away from them. So nobody can go near them to destroy it
Yes, a black hole can move a planet. Black holes are so massive that they can alter the orbits of stars and star systems. This makes changing planetary motion nothing to a black hole.
Black holes are blavk because their gracity is so strong that light cannot escape for us to see.
Black holes do not emit light, so black holes can not be seen this way. But black holes emit X-rays, but stars are not hot enough to emit X-rays. When black holes suck up stars, energy goes to the black hole, and come out as X-rays.
Black holes are so powerful, that if you were in one, it would stretch you apart and you would NEVER come out!!!