12 across
Moon’s
gravity
may
need
to
be
adjusted
(8)
Moon’s gravity may need to be adjusted (8)
hints
0
checks
0
hints
The definition is at the beginning of the clue.
How the clue works
Moon is your definition here, pointing you to one of Jupiter's moons. "To be adjusted" signals an anagram, and if you take may need g (that's "g" for gravity) and shuffle those eight letters about, you get your answer.