BANGALORE, India — The Indian Space Research Organisation (ISRO) has postponed the launch of the nation's first planetary mission, the Chandrayaan-1 lunar orbiter, which had been scheduled for April 9, for at least two weeks.

The delay was ordered to give engineers more time to integrate the scientific instruments aboard the spacecraft, ISRO spokesman S. Satish said Feb. 13. He did not elaborate but said there were no hardware problems with the probe.

The 525-kilogram lunar orbiter is to be launched by a modified Polar Satellite Launch Vehicle from the Sriharikota launch pad on India's east coast. It will carry 11 scientific payloads, including six provided by other nations: two from the United States, and one each from Britain, Sweden, Germany and Bulgaria.

Satish said the launch could take place after a delay of only two weeks, but added that if more time is needed the next opportunity will be "after two or three months."

He said the new launch date will be decided at a meeting of ISRO officials during the week of Feb. 18.

• Indian Rocket Launches Four Satellites into Orbit
• Moon Race: US Not Alone in Future Lunar Exploration
• India, US Hoping for New Chapter in Space Relations