Help Overlap Zoo Reveal Cosmic Dust

Galaxies, vast collections of billions of stars, gas, and dust held together by gravity, are scattered across the immensity of space. But every so often, a coincidence occurs: Two galaxies line up from our point of view on Earth (or from a space telescope) and appear to overlap in the sky. These rare overlapping galaxies […]

Curated from NASA News. Classified as Science by AI, which sometimes makes mistakes.