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 ...

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.

On Monday night you may have a chance to witness the moon obscuring the Red Planet at its brightest, as well as a comet’s closest approach to the sun. By Katrina Miller The first full moon of ...