Celebrity Biographies. Victoria Osteen has been married to Joel Osteen since April 4, 1987. They have been married for 30 years. Victoria Osteen.
Earth's Magnetic Field. The existence of Earth's magnetic field itself is evidence that the outer core is liquid. The outer core is believed to contain a system of convection currents that create a dynamo effect, and generates this field.
What was thought to be a solid iron core is actually crystalline,  surrounded by liquid. But the temperature at which that crystal can  form had been a subject of long-runniâ¦ng debate. Current  measurements suggest the Earth's inner core is 6,000C - as hot as  the Sun's surface.