Thus, a solar eclipse is possible only when the Moon is exactly on that Earth-Sun line, and in the new phase.
(a solar eclipse; is; possible; T:only when the Moon is exactly on that Earth-Sun line, and in the new phase) (the Moon; is; exactly on that Earth-Sun line)
a solar eclipse the Moon
is is
possible T:only when the Moon is exactly on that Earth-Sun line, and in the new phase
exactly on that Earth-Sun line