This resulted in explosive collisions that pushed a great dark cloud of dust into the upper atmosphere and thus shielded the earth's surface from sunlight for many years.
(This; resulted; in explosive collisions) (explosive collisions; pushed; a great dark cloud of dust; into the upper atmosphere) (explosive collisions; shielded; the earth's surface; from sunlight; T:for many years)
This explosive collisions explosive collisions
resulted pushed shielded
in explosive collisions
a great dark cloud of dust into the upper atmosphere
the earth's surface from sunlight T:for many years