That, combined with the tilt of the earth on its axis, means that the comet will be below the horizon in the northern hemisphere most of the time.
(That; means; that the comet will be below the horizon in the northern hemisphere most of the time) Context(That means,List([0, 60))):(the comet; will be; below the horizon; T:in the northern hemisphere)
That means,List([0, 60))
That the comet
means will be
that the comet will be below the horizon in the northern hemisphere most of the time
below the horizon T:in the northern hemisphere