The number of victims depends on which definition of the Holocaust is used. Donald Niewyk and Francis Nicosia write in The Columbia Guide to the Holocaust that the term is commonly defined as the mass murder of more than five million European Jews.
A colour photograph of Uranus, taken by Voyager 2 in 1986 as it headed towards the planet Neptune. The exploration of Uranus has, to date, been solely through telescopes and NASA 's Voyager 2 spacecraft, which made its closest approach to Uranus on January 24, 1986.Voyager 2 discovered 10 moons, studied the planet's cold atmosphere, and examined its ring system, discovering two new rings.he Uranian moon Miranda, imaged by Voyager 2. Uranus is the third-largest planet in the Solar System. It orbits the Sun at a distance of about 2.8 billion kilometers (1.7 billion miles) and completes one orbit every 84 years. The length of a day on Uranus as measured by Voyager 2 is 17 hours and 14 minutes.
There are thirteen rings surrounding the planet Uranus. Ten of the rings were first discovered by Australian astronomers in 1977. In 1986, technological advances allowed the space craft Voyager II to identify the other three rings encircling the planet.