The speed of light is the ultimate speed in the universe, this concept comes from Einstein's theory of relativity, according to the basic principle of relativity, no matter can move at or above the speed of light, however, there are some phenomena in the universe that seem to exceed the limit of the speed of light, allowing us to go deeper into these phenomena.
First of all, let's understand the expansion of the universe, according to cosmological research, the universe has been expanding at an accelerated rate since the Great **, which means that the objects in the universe are constantly moving away from our observation points, and more importantly, some galaxies that are far away from us are far beyond the speed of light, but they are still moving away from us at faster speeds than light.
The explanation for this phenomenon is that the expansion of the universe is not due to the fact that the objects themselves are moving faster than the speed of light, but the expansion of the universe itself, and this process is not limited by the speed of the objects themselves, so even if the objects do not exceed the speed of light, they can seem to exceed the limit of the speed of light, and the expansion rate of the universe is much faster than the speed of light, which is one of the reasons why some of the galaxies we observe are far away from us.
Secondly, let's talk about quantum entanglement, quantum entanglement is an extremely magical and puzzling phenomenon in quantum mechanics, when two quantum particles are entangled, the state between them is closely related, and even if they are separated, changing the state of one particle will immediately affect the state of the other, no matter how far away they are, this effect seems instantaneous, i.e. it seems that information is transmitted faster than the speed of light.
However, this does not mean that the information itself is beyond the speed of light, quantum entanglement does not allow the transmission of information, and therefore does not violate the basic principles of relativity, quantum entanglement is a very specific quantum phenomenon, and the mechanism behind it is still a hot research topic in the scientific community, although quantum entanglement implies some kind of connection beyond the speed of light, but it is not yet possible to use this connection for faster-than-light communication or transmission of information.
Furthermore, dark energy is also a phenomenon that has attracted widespread attention beyond the speed of light, dark energy is an unknown form of energy, which is believed to be one of the reasons for the expansion of the universe, according to the observation data of cosmology, the expansion rate of the universe is accelerating, and dark energy is believed to be the force driving this acceleration, although we know little about the nature of dark energy, its existence and role indicate a force in the universe that exceeds the speed of light.
Although the speed of light is considered the limit of the universe, there are still phenomena in the universe that seem to transcend this limit, such as the expansion of the universe, quantum entanglement, and dark energy, which provide us with an opportunity to understand the mechanism of the universe more deeply, and the study of these phenomena not only challenges our understanding of the physical world, but also opens up new directions for future scientific exploration.