Hints of Oort clouds around other stars may lurk in the universe’s first light

Searching the cosmic microwave background could reveal other giant spheres of icy debris

cosmic microwave

HIDDEN TREASURES  This map of the cosmic microwave background taken by the Planck satellite could also hide signs of exo-Oort clouds — planetary graveyards surrounding other stars.

Planck/ESA and NASA, IPAC Infrared Science Archive

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