Editing Planetary core (section)

====Moon====
The [[Internal structure of the Moon|existence of a lunar core]] is still debated; however, if it does have a core it would have formed synchronously with the Earth's own core at 45 million years post-start of the Solar System based on hafnium-tungsten evidence<ref name="Munker, et al. 2003">{{cite journal |last1=Munker |first1=Carsten |last2=Pfander |first2=Jorg A |last3=Weyer |first3=Stefan |last4=Buchl |first4=Anette |last5=Kleine |first5=Thorsten |last6=Mezger |first6=Klaus |title=Evolution of Planetary Cores and the Earth-Moon System from Nb/Ta Systematics |journal=Science  |volume=301 |date=July 2003 |pages=84–87 |doi=10.1126/science.1084662 |pmid=12843390 |issue=5629|bibcode = 2003Sci...301...84M |s2cid=219712 }}</ref> and the [[giant impact hypothesis]]. Such a core may have hosted a geomagnetic dynamo early on in its history.<ref name="Hauck and Van Orman 2011" />