Daily Updates - June 18, 2004
Opportunity Status at end of sol 138-140

Opportunity spent sol 138 grinding an 8.12-millimeter (0.32 inch) hole into the rock target called "Tennessee." It took the rover 2 hours and 4 minutes to complete this grind, which is the deepest yet of the mission. After all this hard work, the rover went into a deep sleep for the night.

On sol 139, Opportunity used the microscopic imager to analyze the hole in Tennessee. The rover also performed both a daytime Moessbauer spectrometer observation and an overnight alpha particle X-ray spectrometer integration on the abraded surface.

Opportunity was busy finishing up some miniature thermal emission spectrometer observations of Tennessee on sol 140 and then began a long Moessbauer integration that ran for the entire sol. Opportunity enjoyed some more deep sleep after these activities and will finish up the last of the Tennessee observations the morning of sol 141.