A SPACE FOR THE "UNN" SIDERS

Time dilation is the phenomenon in which time slows down for an observer inside a fast-moving object. The idea of time dilation is not a new one. It was first proposed by Albert Einstein in his theory of relativity, and has been tested many times since then. The theory of relativity suggests that if you are traveling at the speed of light, your time would slow down relative to those who are stationary. In the context of black holes, the closer you get to the event horizon, the slower time moves relative to those outside it. This means that if you were to fall into a black hole, your watch would tick slower than if you were standing on Earth's surface. This is due to gravitational time dilation - a change in how fast time passes as one approaches an object with gravity.

Quantum mechanics is a branch of physics that deals with the behavior and properties of matter and energy on the atomic and subatomic scale. The quantum world is governed by the laws of quantum mechanics. These laws are completely different from those of classical physics. It's a world where particles can exist in more than one place at the same time, until they are observed or measured, where light can behave like a particle or a wave, and where space and time are not absolute but depend on how we measure them.

Quasars are the most luminous objects in the universe. They are powered by supermassive black holes that can be billions of times more massive than our sun. The first quasar was discovered in 1963 by a graduate student, Maarten Schmidt, at Cal Tech. Quasars are a type of active galactic nuclei that emits strong electromagnetic waves. They are also called quasi-stellar objects or QSOs. Quasars can be used to find black holes because they are very close to them, and as a result, they move around them in a process called gravitational lensing.