c.d. dziwnych kulek.

[Andrzej Kasperowicz]

http://marsrovers.jpl.nasa.gov/gallery/press/opportunity/20040209a/1M12951
5692EFF0312P2939M2M1_mi_RobtE_full-B016R1.jpg

""This is wild looking stuff," Squyres said. "The rock is being eroded 
away and these spherical grains are dropping out." The spheres may have 
formed when molten rock was sprayed into the air by a volcano or a meteor 
impact. Or, they may be concretions, or accumulated material, formed by 
minerals coming out of solution as water diffused through rock, he said."

ak