MOSCOW, May 23 (RIA Novosti) - NASA has once again postponed the landing of the Atlantis space shuttle due to the rainy weather, moving the date for Sunday, the U.S. space agency said on Saturday.

"STS-125 Entry Flight Director Norm Knight has waved off today's landing opportunities. Capcom Greg Johnson explained to the crew the weather did not permit a Kennedy landing today," NASA said on its official website.

Atlantis was originally scheduled to land at a U.S. landing site on Friday, but the date was rescheduled for Saturday due to poor weather conditions.

The Atlantis space shuttle with seven astronauts on its board took off from Cape Canaveral on May 11. The STS-125 eleven-day mission, the final shuttle flight to NASA's Hubble Space Telescope, was intended to enhance the observatory and ensure cutting-edge science.

A total of five spacewalks were carried out to install new instruments and thermal blankets, repair two existing instruments, refurbish subsystems and replace gyroscopes, batteries and a unit that stores and transmits science data to Earth.