Sentences with phrase «iron core whose»

Inside, however, there is a large iron core whose diameter is 3,600 to 3,800 km (about 2,200 to 2,400 miles).

Not exact matches

This silent defender is Earth's magnetic field, a force field whose source lies in the churning molten iron that forms the planet's core.

The long - held assumption was that it takes a planet the size of Earth to insulate a molten iron core, whose currents and eddies act as a dynamo to generate a magnetic field.

Mercury's peculiar magnetic field provides evidence that iron turns from a liquid to a solid at the core's outer boundary, say the scientists, whose research currently appears online in the journal Geophysical Research Letters and will be published in an upcoming print edition.

When the core ignites, carbon and oxygen fuse to form lots of radioactive cobalt - 56, whose radioactive decay into iron - 56 with a half - life of 77 days powers the peak brightness of a supernova.