Astronomers Baffled by 'Almost Invisible' Dwarf Galaxy Challenging Dark Matter Theory

Astronomers have discovered an "almost invisible" dwarf galaxy named Nube, which challenges current understanding of the cosmos. Nube is extremely diffuse, emitting barely any light and is 10 times fainter and wider than expected. Its unusual properties cannot be explained by existing dark matter theories, leading to speculation about the nature of dark matter particles. The discovery has prompted a search for similar galaxies to further unravel this cosmic mystery.