Assertion: body | /r/HasProperty | the sun
Facets:
Source sentences:
text: The solved, but simplified problem is then "perturbed" to make its time-rate-of-change equations for the object's position closer to the values from the real problem, such as including the gravitational attraction of a third, more distant body (the Sun).
text: When a planet, such as Earth, moves through space, it is influenced by all the other bodies around it and the most massive body in the solar system is the sun.