The space shuttle Atlantis is going to try to land again today after two consecutive days of being rained out, Nasa said.
If the weather does not allow a landing at the Kennedy Space Center in Florida, the shuttle and its crew are going to be diverted to California.
Nasa prefers to land the shuttle at the space centre, but the forecast in Florida is rainy for the third day in a row.
The weather at Edwards Air Force Base in California is looking much better, but it takes time and about two million dollars to ferry the shuttle back across the country to Florida.
Atlantis can stay in space throughout Monday, but Nasa does not want to cut it close.
The shuttle is trying to return to Earth after repairing and upgrading the Hubble Space Telescope.Reuse content