Scientists have discovered a potentially star-forming cloud and called it "Eos." It is one of the largest single structures in the sky and among the closest to the sun and Earth ever to be detected.

Hubble’s latest image peers inside N159, a vast stellar nursery nearby, revealing how cold hydrogen clouds, newborn stars, and powerful stellar forces quietly shape one of our closest galaxies.

The puzzling appearance of an ice cloud seemingly out of thin air has prompted NASA scientists to suggest that a different process than previously thought — possibly similar to one seen over Earth’s ...