The nature of dark matter is still not fully understood, and it remains a subject of ongoing scientific research and investigation. Dark matter refers to a hypothetical form of matter that does not interact with light or other electromagnetic radiation, making it difficult to detect directly. Its presence is inferred through its gravitational effects on visible matter and the structure of the universe.
Various theories have been proposed to explain dark matter, including the possibility that it consists of particles yet to be discovered. While it is challenging to speculate on the exact properties of dark matter, the idea of dark matter as coherent (plane) waves that do not interact with spacetime is not a commonly accepted or widely explored concept in mainstream scientific discussions.
Currently, the leading candidates for dark matter are particles that do have some form of interaction with spacetime. They are thought to exhibit gravitational effects and potentially weak interactions with ordinary matter. However, the specific properties of dark matter, including its wave-like behavior, if any, are still actively researched and remain a topic of scientific inquiry.
It's important to note that scientific understanding evolves as new evidence and discoveries emerge. Therefore, the information available regarding dark matter may change as scientists continue to investigate and explore the mysteries of the universe.