Earth’s inner core is solid, 'J waves' suggest

• A new study could help us understand how our planet was formed. Scientists report that their research shows that Earth's inner core is solid a finding made possible by a new method for detecting shear waves, or 'J waves' in the inner core.
• the inner core shares some similar elastic properties with gold and platinum. The inner core is like a time capsule.
• The understanding of the Earth's inner core has direct consequences for the generation and maintenance of the geomagnetic field, and without that geomagnetic field there would be no life on the Earth's surface.

SOURCE : SCIENCE DAILY