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A Hubble Space Telescope image of the galaxy NGC1052-DF2. Distant galaxies are visible through DF2 due to its lack of stars and “ghostly” nature. | P. van Dokkum; R. Abraham; STScI, Space Telescope Science Institute
Astronomy

This ‘See-Through Galaxy’ Far, Far Away Contains Virtually No Dark Matter

A new galaxy called NGC1052-DF2, or DF2 for short, challenges prevailing theories of galaxy formation.