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Meteorites have had its fair share of triggering mass extinctions through Earth's history. Its impact generates atmospheric dust and debris covering the Earth's surface, and has long been perceived to have the power to erase life in the entire planet once more, depending on how big it is.
Hoping to find? >> this is an interesting place in the landscape, about a third of a mile away where three land forms come together. the same desert plains that the rover landed on two weeks ago plus harder and older bedrock on and layered outcrops where they think they can use the drill on curiosity and understand the minerallology and look for organic compounds for traces of past life. jon: they blasted, sort of a trial of this laser. what do they hope to learn from that or hope to accomplish? >> that is pretty amazing instrument for analyzing rock composition. it is a buck rogers laser gun ...