When an object enters a black hole, it crosses the event horizon, which is the point of no return. This means that once an object crosses the event horizon, it is impossible for any information or light to escape from the black hole. Therefore, an observer outside the black hole cannot see the object entering it.
As an object enters a black hole, it experiences extreme gravitational forces that cause it to stretch and distort. This process is known as spaghettification, and it occurs because the gravitational pull near a black hole is much stronger at the object's feet than at its head.
Yes, an observer can see the effects of an object entering a black hole. As the object approaches the event horizon, it emits intense radiation, known as Hawking radiation, which can be detected by an observer. Additionally, the distortion of light and the extreme gravitational forces near the black hole can also be observed.
Black holes are difficult to study because they are invisible and do not emit any light. This makes it challenging for scientists to observe them directly. Instead, researchers rely on indirect methods, such as studying the effects of black holes on nearby objects, to gather information about these mysterious objects.
Near a black hole, the intense gravitational forces cause significant distortions in both time and space. Time near a black hole moves slower than in other regions of space, and space is also distorted, appearing to be curved and stretched. This phenomenon is known as gravitational time dilation and is a result of Einstein's theory of general relativity.