It went dormant for a time until it was started again as NEOWISE in 2013, to search for near-Earth objects (NEOs) including comets ... the California Nebula spans 100 light-years.

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 ...

Asteroids, sometimes called minor planets, are rocky, airless remnants left over from the early formation of our solar system. Nasa releases images.

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.