8. Earth's Crust is Old

The discovery in Australia implies that the Earth’s crust was created long before scientists had ever realized before. One of the people involved in a study focused on these zircon crystals which was reported in Nature Geoscience elaborated on this idea in a statement. In professor John Valley’s words, “That age is 300 million years older than the oldest previously dated age [of other crystals], and only 100 million years after the magma ocean.”