Wind tunnels experiments show sand grains can be lofted on Mars to create dunes.
NASA scientist Jason Barnes says Titan and Earth have much in common, but not when it comes to sand.
... . Aerosol particles can consist of sea salt, sand grains, soot particles, sulfates and other materials of organic and inorganic origin. The natural processes include ...
... . But they build tubes several inches long, using sand grains and shell fragments. "They will not leave their tube ... with." Tiny, hair-like cilia brush the sand grains and shell pieces down the tentacles ...
... handful of sand contains countless grains, which interact with each other via friction and impact forces ... to run a simulation charting the motion of millions of sand grains. Negrut hopes his simulation ...
... in the stability of surface water, which alters the ability of sand grains to stick together and cement in order to form the rock layers. "The whole climate system ...
... produce surface tension. If macroscopic objects—say, grains of sand—replace the molecules, the relative strength ... fall. Royer and his colleagues also measured grain-to-grain interactions directly with an atomic force ...
... temperature at this time." The size distribution of clay and sand grains in the sediment points to the formation of sea ice in shallow coastal seas during autumn ...
Deep under the sea, a fossil the size of a sand grain is nestled among a billion of its closest dead relatives. Known as foraminifera, these complex little ...
Deep under the sea, a fossil the size of a sand grain is nestled among a billion of its closest dead relatives. Known as foraminifera, these complex little ...
Deep under the sea, a fossil the size of a sand grain is nestled among a billion of its closest dead relatives. Known as foraminifera, these complex little ...
... soils, marine subtidal stromatolites and coastal sand flats, are able, because of their larger size, to hog-tie sand grains and resist eroding wind and fluid at velocities that would typically wash away their thread ...
... this sticky mesh back and forth around sand grains, sticks or leaf pieces to create ... in aquariums, but with glass beads instead of the sand and rock grains found in streams. The larvae expanded their rock ...
Whirlwinds create dark paths by sucking sand grains clean
... to image the rapidly changing behavior of the streaming sand, much as a skydiver might photograph a fellow ...
