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Robots are any machine or mechanical device that operates automatically with human-like skill.

On January 25, 2004, the Mars Exploration Rover (MER-B) called Opportunity landed on Mars. It was sent by NASA to explore the Martian surface and to gather information for those left still on Earth. NASA laid out a series of objectives for Opportunity to accomplish. Overall, Opportunity has exceeded NASA's expectations for the mission.

Objectives

-Search for and characterize a variety of rocks and soils that hold clues to past water activity. Including those that have minerals deposited by water-related processes such as precipitation, evaporation, sedimentation or hydrothermal activity.

-Determine the distribution and composition of minerals, rocks, and soils surrounding the landing sites.

-Determine what geologic processes have shaped the planet and affected the chemistry. ex) water or wind erosion, sedimentation, hydrothermal mechanisms, volcanism, and cratering.

-Help determine the accuracy and effectiveness of various instruments that survey Martian geology from orbit like the Mars Reconnaissance Orbiter

-Search for minerals that contain water or were formed in water, such as iron-bearing carbonates.

-Determine what processes help to form the rocks found.

-Look for natural clues to liquid water being present.

-Discover if there could be life.

Facts

-Mars Rover Opportunity has traveled 13,866.70 meters (8.62 miles) as of Sol 1776 (21 January, 2009).

-Opportunity has explored significant features of Mars such as the Victorian Crater and he Eagle Crater.

-Opportunity has lasted over 5 years, much longer than the anticipated 90 days.

-Both satellites and the rovers have shown that there once was water on the surface of mars.

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marsrover.nasa.gov

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