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.
Our eyes perceive objects by sensing the light reflected off the object. If no light comes from an object, our eyes cannot sense it. Black holes are so massive that even light cannot escape the its gravity, and therefore no escaped light means no possibility of detection by our eyes.
stellar black holes were stars (these are large)primordial black holes were pieces of the big bang (these are microscopic)
No. It certainly has black holes, but it has other things as well.No. It certainly has black holes, but it has other things as well.No. It certainly has black holes, but it has other things as well.No. It certainly has black holes, but it has other things as well.
Black holes do not die but they can evaporate.
You have to be invisable,To get invisable.
There are no black holes in our solar system
They are called "black holes".
The most massive stars will die as black holes.
Schwarzschild black holes. Named after the scientist who proved mathematically black holes can exist.
Yes black holes are moving but they have no sense of direction..
Ergoregion
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.