Assertion: terrestrial planet's material | /r/HasProperty | discussed in section
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text: As discussed in Section 6, cometary material can condense at temperatures of roughly 30 K. Models of the early solar nebula have temperatures of roughly 30 K in the Uranus–Neptune region, and it is reasonable to conclude that comets formed near there, meaning that the material condensed and agglomerated into comet-sized (most with radii in the range 1–10 km) bodies.