What created earth's magnetic field?

There was no body to mark date at that time.

From a scientific perspective, there are at least two very different questions here. How was the universe created? We have pretty good models of how the universe developed from...

To compress atoms we need huge pressure.We can not make such huge pressure on earth..Only at the core of stars with 6 to 10 solar mass such pressure is created.

There are a couple of theories of planetary formation. The most commonly accepted one is that the same inter-stellar materials that coalesced into stars also formed that orbit the stars....

The Earth's magnetic field can reverse if the electric currents generated in the core change direction. The Earth's rotation however, has to obey the law of conservation of angular momentum....

The water in is older than earth itself.The water inside earth came out as steam from volcanic vents and the clouds rained down water..Comets also contain lot of water ice.Early...

Very simply. Magnetic field is created by electric currents. The currents are simply charges that are rotating inside . This convection, which is in the plane of rotation of the...

Iron, Nickel and Cobalt have free electrons in their outer shell which can spin creating a magnetic field. Most ordinary magnets are created from Iron because of this property....

Consider that your average galaxy contains between 100 - 300 billion stars. Multiply that by the 50 billion (approximation) galaxies in the universe and simple statistics shows that other earths...

Democritus was a more of a natural philosopher than a scientist, and nothing of his wriiting survives; he was certainly not an empirical scientist. He is said to have developed...