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Curiosity Rover finds round 'ball' on Martian surface
- gus_massa 12y agoIn Argentina, in el Valle de la Luna, we have a place with a lot of big natural stone spheres. They are bigger than the sphere in the picture, so perhaps it has a different geological origin. http://commons.wikimedia.org/wiki/File:Valle_de_ichigualasto,_cancha_de_bochas.jpg http://commons.wikimedia.org/wiki/File:Valle_de_ichigualasto... More info about natural stone spheres: http://en.wikipedia.org/wiki/Stone_ball#Natural http://en.wikipedia.org/wiki/Stone_ball#Natural Some pages with photos of similar places: http://101lugaresincreibles.com/2010/10/cinco-sitios-con-rocas-esfericas-que-parecen-talladas.html http://101lugaresincreibles.com/2010/10/cinco-sitios-con-roc... http://www.cesarlizano.name/sibowak/esferas_de_piedra_costa_rica_htm/esferas_de%20Piedra_en_el_mundo.htm http://www.cesarlizano.name/sibowak/esferas_de_piedra_costa_...