(CNN) -- An equipment problem forced NASA early Friday to delay the launch of a spacecraft aimed at scanning the entire sky to discover hidden cosmic objects, the U.S. space agency said.
The Wide-field Infrared Survey Explorer mission is now scheduled to launch Monday morning.
NASA crews will tackle an anomaly in the motion of a booster steering engine by removing and replacing a suspect component on Friday, the agency said on its Web site.
"The WISE spacecraft will circle Earth over the poles, scanning the entire sky one-and-a-half times in nine months. The mission will uncover hidden cosmic objects, including the coolest stars, dark asteroids and the most luminous galaxies," NASA said.
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