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 rar...
Help Overlap Zoo Reveal Cosmic Dust
By system
September 30, 2026 •
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Original source:
NASA
