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10 April 2014 11:44 am ,
Vol. 344 ,
The Pyrenean ibex, an impressive mountain goat that lived in the central Pyrenees in Spain, went extinct in 2000. But a...
Tight budgets are forcing NASA to consider turning off one or more planetary science projects that have completed their...
Ebola is not a stranger to West Africa—an outbreak in the 1990s killed chimpanzees and sickened one researcher. But the...
In an as-yet-unpublished report, an international panel of geoscientists has concluded that a pair of deadly...
Tropical disease experts tried and failed before to eradicate yaws, a rare disfiguring disease of poor countries. Now,...
Since 2002, researchers have reported that agricultural communities in the hot and humid Pacific Coast of Central...
Balkan endemic kidney disease surfaced in the 1950s and for decades defied attempts to finger the cause. It occurred...
- 10 April 2014 11:44 am , Vol. 344 , #6180
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ScienceShot: Mars Rover Finds Watery Wonderland
15 January 2013 5:50 pm
The Curiosity rover has entered a martian terrain offering clear signs of ancient water and tantalizing hints of a scientific bonanza. In a press teleconference today, NASA rover team members reported the discovery of mineral-filled veins (white arrows) and small mineral spheres (black arrows) that require that water once saturated the muddy floor of Gale crater. But geologists are particularly enticed by the sedimentary rock that Curiosity has roved across on its way from its landing site. As it descended deeper into the exposed strata and farther back in geologic time, it first encountered pebbles and cobbles laid down in deep torrents of water, then sandy sediments deposited by less turbulent currents, and finally fine, silty sediments. The silty sediments speak of a far quieter time in Gale, perhaps when a placid lake filled the crater. Lake sediments are the ideal place to look for organic matter lingering from ancient martian life, which is what Curiosity will do when it begins rock drilling in a few weeks.
See more ScienceShots.