We are staring "right down the barrel of it, which is really quite surprising to me — we're just lucky." One of the most photographed objects in the night sky is the Ring Nebula, wreckage of a ...

This towering structure in the Eagle Nebula is a 9.5 light-year-high column of gas and dust from a stellar nursery. This image shows N90, where bright young stars carve a cavity, with distant galaxies ...