Waves of gravity cause immense astrophysical convulsions.
When two black holes get locked into each other’s gravity, they circle each other and gradually spiral inward until they merge into one. The merging of neutron stars: burnt-out stars less massive than black holes that have stopped their collapse at the point where they are made of matter so dense that a thimbleful would weigh as much as 50 million elephants. At the center of our Milky Way sits a supermassive black hole several million times the mass of our sun. It formed from collapsed stars and clouds of cosmic gas and dust. Every galaxy needs a self-contained drain to keep it functioning correctly. Near a black hole, the slowing of time is extreme. From the viewpoint of an observer outside the black hole, time stops. For example, an object falling into the hole would appear frozen in time at the edge of the hole.
The collision of two black holes causes the gravity waves that we’ve seen so far. These are formed from stars many times more massive than our sun that have burnt out and collapsed under their gravity. Gravity is the warping of spacetime caused by mass. The collapse of a star can continue until nothing remains but a singularity, maybe. Near a black hole, the slowing of time is extreme. From the viewpoint of an observer outside the black hole, time stops. For example, an object falling into the hole would appear frozen in time at the edge of the hole.
Pulsars are rapidly spinning neutron stars that send out intense beams of radio waves from their poles. As a result, pulsar signals are highly regular and predictable.
Space–Time is absolute. Absolute-Motion also exists. However, this absolute motion is only considered absolute relative to the virtual 4-dimensional environment known as Space–Time. The concepts of space and time were separate in physical theory before particular relativity theory, which connected the two and showed both to depend on the reference frame’s motion. The idea of relativity does not have a concept of absolute time because simultaneity is relative.
Quantities related to space and time are absolute, the distance between two events in space-time, the energy-momentum of an object, and the speed of light. Time will never be absolute. The rate at which it passes depends entirely on your speed and acceleration. Time is an illusion; our naive perception of its flow doesn’t correspond to physical reality. All matter in the universe handles the curvature of spacetime. If time had not existed at all, nothing could have started; nothing could have progressed from the instant of the big bang so that no stars would have condensed out of the soup of primitive particles, no planets would have formed around the stars, and no life would have grown on the planets and so no you or me. The actual reality is timeless.
Space-time is emergent, not fundamental. Spacetime is not fundamental. The notion of particles and fields living in spacetime is an emergent property from other underlying microscopic theory dynamics.
Space-time arises as an emergent phenomenon of the quantum degrees of freedom entangled and live in the boundary of space-time. This means that quantum entanglement is the fundamental property that gives rise to spacetime. Thus, time is an emergent phenomenon that is a side effect of quantum entanglement.
Near a black hole, the slowing of time is extreme. From the viewpoint of an observer outside the black hole, time stops. For example, an object falling into the hole would appear frozen in time at the edge of the hole.
