Amongst other conditions, a renal ultrasound scan can detect kidney stones, cysts, tumours, congenital abnormalities of the renal tract (these are abnormalities that have been present from birth), problems of the prostate, effects of infection and trauma of the kidneys and renal tract.
What is Astronomy? Astronomy is the study of the universe, namely the objects we. observe, like the Moon, Sun, and planets in our Solar System; stars; our Milky Way Galaxy, and other galaxies; and, a host of. other celestial objects and phenomena, like nebulae, and black. holes! Hubble Space Telescope Images.
Astronomy is an enormous subject. Only a selection of glossary is included mainly to help those who are new to astronomy to understand the subject published in this web site. absolute brightness-The apparent brightness an object would have if it were placed at a distance of 10 parsecs (33 light years) from Earth.