Posts Tagged ‘Ring nebula’

The Ring Nebula (M57) and IC1296 Imaged by John Moore

The Ring nebula and IC1296 - click to enlarge
September 5th, 2009 | John Moore | Read More

The Ring Nebula (M57) Imaged by John Catlyn

M57 is a planetary nebula in the constellation of Lyra and is visible in small telescopes.  Planetary nebulae such as M57 are formed when a low or medium mass star (such as the Sun) exhaust its hydrogen in the stellar core.   The structure of the star changes so it can achieve a new equilibrium...
August 17th, 2009 | John Catlyn | Read More