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impact – n. an act or event in which something strikes another thing
asteroid – n. a space rock, that can be small or the size of a large moon, that orbits the sun
comet – n. an outer space object that is made of material like gas and ice which is left behind in its orbit as it approaches the sun
debris – n. pieces that are left after something comes apart
tidal force – n. a secondary force of gravity involving two objects
shatter – v. to suddenly break into many pieces
fragment – n. a broken piece of something that was once larger
crater – n. a round hole made by an explosive force such as a bomb or an object falling from the sky
