Assertion: terrestrial planet's density | /r/HasProperty | the same
Facets:
value: unlike venus
type: OTHER
value: essentially
type: DEGREE
Source sentences:
text: (Mercury's observed density of 5.43 is essentially the same, since it is a small world with weak gravity.)
text: But unlike Venus, for which the calculated and observed densities are the same (within the errors produced by various assumptions necessary to the calculations), Mercury is much denser than we would expect, and Mars much less dense than we would expect.