Wednesday, 6 August 2014

ON THIS DAY IN SCIENCE HISTORY - 6TH AUGUST

On this day in 1996, NASA announced the discovery of potential evidence of an early life form on Mars. It came in the form of an alleged tiny fossil found on a meteorite in Antarctica, which was believed to have come from Mars. The fossil could only been seen as a highly magnified image, as a microscopic tube-like form, less than 1% of the width of a human hair. Some believed that it could perhaps represent a simple Martian organism that lived over 3.6 million years ago. A huge impact 16 million years ago could have blasted the rock into space, and it landed in Earth’s Antarctica only 13,000 years ago. The meteorite ‘ALH 84001’ also carried organic molecules and mineral features which are characteristics of biological activity. At best, the evidence is inconclusive, and other scientists often entirely dispute the interpretation.  

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