Earth's atmosphere is like an Achilles heel for telescopes. Light pollution and moonlight are enough to drown out a nebula ...

The Ring Nebula is perhaps one of the most photographed objects in the night sky, dating back to its first image in 1886. Its intrinsic structure has been debated for as long as it has been observed.

An international team of scientists has produced the clearest three-dimensional view yet of the Ring Nebula—one of the night sky's most iconic celestial objects. The Ring Nebula is perhaps one ...