This photo shows the cosmic region known as Sh2-239 and LDN 155, where star formation activity ... Arizona was one of the first to capture the nebula in such detail. He took multiple exposures ...

Celestial spelunkers take note This week’s first large-scope object is the Cave Nebula, also known as emission nebula Sharpless 2–155 and Caldwell 9. It lies in the constellation Cepheus the King.

Stellar nursery as seen in the Cocoon Nebula deep field Photo Credits: Marcel Drechsler/NASA SH2-155: Inside the Cave Nebula Photo Credits: Eric Coles, Mel Helm/NASA Young stars in NGC 7129 ...