HKU astronomers develop a new method to estimate distances of planetary nebulae
30 Nov 2015
Three astronomers of HKU, Dr David Frew, Professor Quentin Parker and Dr Ivan Bojicic, based on a culmination of ten years of research work, developed a new method for measuring more accurate distances between "planetary nebulae" and the Earth. With this technique, "planetary nebulae" finally get a more meaningful physical presence.