European survey reveals 900m galaxies – and possibly secrets of 'dark universe'

The European Space Agency's Euclid mission has released its first major data set, revealing more than 900 million galaxies and about 15,000 potential cases of gravitational lensing across roughly 14% of the sky it will eventually map. The achievement combines the resolution of Hubble with coverage of vast cosmic volumes to create the largest high-resolution map of the universe ever made.