The animation below illustrates how gravitational waves are emitted by two neutron stars as they first orbit each other and then coalesce. Though gravitational waves were predicted to exist in 1916, actual proof of their existence wouldn't arrive until 1974, 20 years after Einstein's death.
Uroabdomen can result from various causes, but the most common is related to trauma. Damage to the kidney, ureter, bladder, or urethra may cause urine to leak into the abdomen. Some common forms of trauma that can result in a disruption of the urinary tract in cats include:
1 A cystocele occurs when the wall between a woman's bladder and her vagina weakens and allows the bladder to droop into the vagina. 2  Symptoms of a cystocele include urine leakage and incomplete emptying of the bladder.his condition may cause discomfort and problems with emptying the bladder. A bladder that has dropped from its normal position may cause two kinds of problems -- unwanted urine leakage and incomplete emptying of the bladder.