Summary:
- This article discusses a major breakthrough in understanding dark matter, which is a mysterious and invisible substance that makes up about 85% of the universe's matter.
- Physicists have developed a new theory that explains how dark matter may have formed in the early universe, shortly after the Big Bang. This theory helps resolve a longstanding puzzle in the Big Bang theory.
- The new theory suggests that dark matter may have originated from "dark photons" - hypothetical particles that are similar to regular photons but do not interact with ordinary matter, making them difficult to detect.