What is a voiding cystourethrogram (VCUG)? A voiding cystourethrogram (VCUG) allows us to evaluate your child's urethra and bladder size, shape, and capacity. This procedure uses x-rays and a contrasting agent that is administered by catheter into your childâs bladder. A VCUG can also help us determine whether your child has reflux â a condition where urine from the bladder goes upward back to the kidneys.
Finally, after five years of searching, on August 30, 1992, Jewitt and Luu announced the Discovery of the candidate Kuiper belt object (15760) 1992 QB1. Six months later, they discovered a second object in the region, (181708) 1993 FW.
While most of the 100,000 plus objects in the Kuiper Belt are composed primarily of ices, Pluto and the small planets in this region are rocky. Pluto is estimated to be 70 percent rock, and Eris, being 27 percent more massive, is likely more rocky and therefore more planet-like.r. Mike Brown is a professor of planetary astronomy at Caltech. Heâs best known as the man who killed Pluto, thanks to his teamâs discovery of Eris and other Kuiper Belt Objects. We asked him to help us explain this unusual region of our solar system.