ALH84001: three sensational NASA pictures
President Bill Clinton announced, in 1996, at a sensational press conference that NASA had probably found signs of (fossil) life in a rock from Mars. The stone, numbered ALH84001, was found ten years earlier during an expedition in the Antarctic. Given its composition it had to have come from Mars, were it would have been propelled from the planet after the impact of an asteroid. Since then it had travelled through space for millions of years and eventually crashed on Earth. The rock is at least 3.6 billion years old.
One NASA picture in this set shows the stone in its entirety, a second photo -taken by an electron microscope- shows a worm-like structure, possibly a fossil (less than 1/100 the thickness of a human hair) and photo three shows orange coloured minerals, possibly produced by bacteria. The discussion between supporters and opponents of this scientific research continues to this day! All pictures are from NASA, approx. 20 x 25 cm, and are original from August 1996
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