ALMA deep view of part of the Hubble Ultra Deep Field

A trove of galaxies, rich in carbon monoxide (indicating star-forming potential) were imaged by the Atacama Large Millimeter/submillimeter Array (ALMA) (orange) in the Hubble Ultra Deep Field. The blue features are galaxies imaged by Hubble.

This image is based on the very deep ALMA survey by Manuel Aravena, Fabian Walter and colleagues, covering about one sixth of the full Hubble Ultra Deep Field area.

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