The image, taken by the European Southern Observatory's (ESO) Very Large Telescope (VLT) at the Paranal Observatory in Chile, captures an emission nebula — a bright cloud of ionized gas that ...

Its intrinsic structure has been debated for as long as it has been observed. The team determined the nebula to have an ellipsoidal shape using Submillimeter Array (SMA) radio-wavelength mapping of ...

The intricate pattern of planetary nebula Abell 30 is revealed in these ... In the main image a large spherical shell is seen in emission of hydrogen (blue) and oxygen (red) as the result of ...