How had been these irregular Martian spherules created? Hundreds of irregular grey spherules fabricated from iron and rock and dubbed blueberries had been stumbled on embedded in and surrounding rocks strategy the landing position of the robot Opportunity rover on Mars in 2004. To relieve investigate their starting up attach, Opportunity stumbled on a surface dubbed the Berry Bowl with an indentation that modified into prosperous within the Martian orbs. The Berry Bowl is pictured right here, imaged right by rover’s 48th Martian day. The moderate measurement of a Martian blueberry rock is handiest about 4 millimeters across. By analyzing a spherical patch within the rock surface to the left of the densest patch of spherules, Opportunity bought records showing that the underlying rock has a substantial different composition than the hematite prosperous blueberries. This records contributes to the increasing consensus that these cramped, irregular, grey orbs had been slowly deposited from a bathtub of soiled water. APOD Turns 30!: Free Public Lecture in Cork, Ireland on Tuesday, June 24 at 7 pm
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