Hypothetically stopping time while still being able to observe our world raises interesting questions about the behavior of light and gravity. However, it is important to note that the concept of stopping time is purely speculative and not supported by current scientific understanding. Nonetheless, let's explore the hypothetical implications:
Light: If time were to be stopped, it would imply that all processes, including the propagation of light, come to a halt. In such a scenario, it is reasonable to assume that light would freeze in its place, effectively creating a static, unchanging scene. Since time would no longer be progressing, photons of light would not be able to move or interact with any objects or observers.
Gravity: Gravity is the force that attracts objects with mass towards each other. In the hypothetical scenario of time stopping, it is unclear how gravity would behave. Gravity is intimately connected with the curvature of spacetime, as described by Einstein's general theory of relativity. If time were to cease, it would likely affect the spacetime curvature and thus alter the behavior of gravity.
One possibility is that gravity could also "freeze" along with time, resulting in a static gravitational field. Objects would be locked in their positions without experiencing any gravitational pull or movement. Another speculation is that the gravitational field could continue to exist but would be frozen in time, meaning its effects would remain static, unchanging. However, without the progression of time, it becomes difficult to predict precisely how gravity would operate in such a scenario.
It's important to emphasize that these speculations are based on a hypothetical situation that is not supported by current scientific knowledge. Time stopping while still being able to observe the world is a concept that remains in the realm of science fiction and is not currently within the bounds of scientific understanding.