Assertion: balloon's buoyancy | /r/AtLocation | the surface of mars
Facets:
value: in effect
type: OTHER
Source sentences:
text: At that point, at about the elevation of the top of Mount Olympus, the balloon would descend under the influence of Mars' gravity, but buoyancy would begin to take effect, so that at the surface of Mars, buoyancy would be fully in effect, and the balloon would hover just above the surface.