By invisible i assume you mean that the object does not emit electromagnetic radiation.
In which case your answer is dark matter.
Or potentially black holes (if you ignore the possibility of Hawking radiation).
No; a black hole has a gravitational force that's so strong that even light cannot escape it.
A black hole is a region in space-time with very strong gravitational pull that even light cannot escape from it. The ESCAPE VELOCITY is greater than SPEED OF LIGHT.
At the point of the event horizon, the pull of gravity is so strong that the escape velocity reaches the speed of light. As such, when light reaches this point, it cannot escape.
In our solar system it would be the sun. But there are much more massive objects beyond our solar sytem that would have a higher pull - the more massive an object is the higher its gravitational pull. a black hole has a huge gravitational pull, so strong that light cannot escape.
A black hole is an object that has completely collapsed under the force of gravity, crushing atoms and subatomic particles, and having gravity so strong that not even light can escape it.
A black hole
A black hole.
a black hole.
You are referring to a black hole.
Blackholes can affect objects near them strongly. The closer an object gets to the event horizon of a black hole, the more its orbit will be affected. Once an object is pulled in past the event horizon, it cannot escape and is sucked into the black hole. The pull of the singularity is so strong that even light can't escape.
the planets have very strong gravitational pulls.
Black Hole
No; a black hole has a gravitational force that's so strong that even light cannot escape it.
Gravity would crush you. With gravity so strong light cannot escape I am sure you wont.
A black hole is a region in space-time with very strong gravitational pull that even light cannot escape from it. The ESCAPE VELOCITY is greater than SPEED OF LIGHT.
Black holes are blavk because their gracity is so strong that light cannot escape for us to see.
No. A black hole is a highly compressed massive object with gravity so strong that nothing can escape once it passes a certain point.