31.   The weather at the backup landing site at Edwards Air Force Base was expected to be much better than Kennedy, with only scattered clouds.

32.   The weather was OK at Edwards Air Force Base, the backup landing site, and Mission Control gave the go-ahead for the astronauts to finally come down.

33.   The weather also improved at an emergency landing site in Spain.

34.   Weather also was expected to be poor at the backup landing site, Edwards Air Force Base in southern California, with a chance for showers and strong wind.

35.   It was hoped the model would enable scientists to make significant breakthroughs in understanding Mars, as well as help determine landing sites for future missions.

36.   Despite the extraordinary security on the island and unknown to most travellers heading to Hawaii, Johnston was the designated alternative landing site for long-range twin engine aircraft.

37.   Each shuttle launch requires good weather conditions for at least one emergency landing site, the National Aeronautics and Space Administration spokesman added.

38.   It is hoped the model will enable scientists to make significant breakthroughs in understanding Mars, as well as help determine landing sites for future missions.

39.   Mission Control officials ruled out an alternative landing site, at Edwards Air Force Base in California, because of bad weather conditions there.

40.   Mission Control officials ruled out an alternative landing site, at Edwards Air Force Base in California, because of high winds there on Friday.