Left: Hubble's visible-light view of a region of space. Right: ALMA's view of the same area in radio waves, revealing a previously hidden galaxy

Astronomers have spotted two “invisible” galaxies hiding near the dawn of the universe. The team used radio waves to peer behind a curtain of dust that was obscuring them from view, and the find suggests that there were far more galaxies in the early universe than previously thought.

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Category: Space, Science

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