The immediate cause of sudden cardiac arrest is usually an abnormality in your heart rhythm (arrhythmia), the result of a problem with your heart's electrical system.
Version for printing. The first planet to be discovered was Uranus by William and Caroline Herschel on 13 March 1781. It was discovered by the fact that it showed a disk when viewed through even a fairly low powered telescope. The only other planets which have been discovered are Neptune and Pluto.
Uranus is the 7th planet in the Solar System, and the first planet discovered beyond the 5 planets that are visible with the unaided eye. So, who discovered Uranus?The discoverer was Sir William Herschel, who found it on March 13, 1781.Sir William Herschel. Even though Uranus is dim, itâs actually possible to see with the unaided eye in very dark, clear skies. But even so, nobody had ever officially recorded the movement of Uranus, so Herschel is the discoverer.ranus is the 7th planet in the Solar System, and the first planet discovered beyond the 5 planets that are visible with the unaided eye. So, who discovered Uranus?