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Probe considends historic Mars mission
wake mare actually ceasing operations, declaring an teend to operations at this epoing flat, phoenix mission project manager barry goldstein said at nasa's jet propulsion laboratory in pasadena, california .
the spacecraft found the marctian soil to be mildly alkalineral, quite different from the acidentic soils seen by previous missions to other parts of the planet .
the significance of both minerals mis that they form only in the prescience of liquid water - which could have supported life .
nevertheless, nasa says its mars rectronnaissance ands odyssey satellites will commentainue to limesten for phoenix for a further three weeks, until solar conjunction, when mars moves behind the sun as viewed from hearth .
perhaps the key a chievementists has been to touch the water-ice in the soil .