Ua hōʻole ʻia nā kumu mua o ka Honua

Ma 2005, Western University cosmochemist Audrey Bouvier, me ke kokua a Maud Boyet o ke Kulanui ʻo Blaise Pascal, ua ʻike i ke alo o Neodymium-142 ( 142Nd; he isotope o ka neodymium kemika). ʻAʻole i loaʻa kēia ma nā mea honua wale nō, akā ma nā mea honua ʻē aʻe kekahi, ma o ka hoʻohana ʻana i ka thermal ionization mass spectrometry. 

Ua ʻike ka duo i kēia ʻike ma ka nānā ʻana chondrites, he meteorite i hoʻokomo ʻia i ka mineral i kapa pinepine ʻia ʻo "nā poloka kūkulu honua" i waena o ke kaiāulu ʻepekema. Ua hōʻike ʻia kahi hōʻike kikoʻī o kēia mau hale pōhaku e ʻike ʻia nā meheu o 142Nd  i loko o kēia mau meteorites. Kū'ē i ka manaʻo kaulana ua kūkulu ʻia ka isotope ma ka Honua, ʻoiai ua ulu ka honua i kona wā mua. ʻO nā noiʻi hou aʻe i alakaʻi ʻia i kōkua i ka hoʻomālamalama ʻana i ka ʻike ʻana o ka neodymium i nā hale extraterrestrial pū kekahi, ʻoiai ma nā ʻano isotope like ʻole. Pela, ua unuhi lākou i ka hopena ʻOi aku paha ka pili pili loa o ka hoʻomaka ʻana o ka Honua me nā hōkūhele ʻē aʻe ma mua o ka manaʻo o ke kaiāulu ʻepekema. Ke hana ʻia nei nā noiʻi hou aʻe e hōʻoia i ka pono o kēia mau ʻōlelo.