Assertion: satellite's orbit | /r/HasProperty | possible
Facets:
Source sentences:
text: The "frozen" orbit is selected as this is the closest to a circular orbit that is possible in the gravitational field of the Earth.
text: Further studies have discovered that nonplanar orbits are also possible, including one involving 12 masses moving in 4 roughly circular, interlocking orbits topologically equivalent to the edges of a cuboctahedron.