Ring Nebula is a planetary nebula -- objects that are the colourful remnants of dying stars that have thrown out much of their mass at the end of their lives.
The TMT will be the most gigantic scope ever to be constructed by the world at a cost of over $2.6 billion, with collaboration of India, US, Japan, Canada and China, said Dr. Prasanna Deshmukh, 35, one of the scientists engaged in the mega-project.