Visualization of a dark matter wave function density reconstructed from Leo II observations. Credit: Physical Review Letters (2025). DOI: 10.1103/PhysRevLett.134.151001 In a new study published in Physical Review Letters, scientists have estimated a new lower bound on the mass of ultra-lightweight bosonic dark matter particles. Purported to make up about 85% of the matter content in the universe, dark matter has eluded direct observation. Its existence is only inferred by its gravitational effec...