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Does Size Matter? How Deadly a Meteorite is Depends More on Its Composition, Say Experts

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. ....

Instituto Tecnol , Chris Stevenson , Ecological Sciences , University School Of Earth , University Of Liverpool , Quadrantid Meteor Shower , Watch This Week , Breathtaking Celestial , Meteor Impact , Rock Composition ,

Detailed text transcripts for TV channel - FOXNEWS - 20120820:15:55:00

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 and lasers a tiny spark of the surface and measuring it with a spectrometer and microscope and tell you elements in the cloud without having to drill or bring a sample to the lab. jon: tells you what the martian surface or what that ....

Curiosity Rover , Desert Plains , Land Forms , Jon Scott , Traces Of Past Life , Buck Rogers , Rock Composition ,