Summarised Words S201 (NASA)

Paragraph 1	Though gigantic asteroids do not hit the ground after burning up,
Paragraph 2	bigger ones have a higher chance of hitting earth.
Paragraph 3	Humans, unlike dinosaurs can foresee and
Paragraph 4	trace incoming asteroid to protect themselves.
Paragraph 5	Planets in our solar system have been endangered for ages.
Paragraph 6	Being near-earth is hazardous during heavy-bombardment particularly.
Paragraph 7	Large rocks half a kilometre long are rare but more destructive.
Paragraph 8                            Total Words : 80	An impact can obliterate Earth on a massive scale.