CAPE CANAVERAL, Fla., Sept. 11 (UPI) -- The space shuttle Discovery could land Friday evening at its backup site in California due to increasingly inclement weather in Florida, NASA said.

A landing at that Kennedy Space Center was scrubbed Thursday because of bad weather.

If the weather in Florida fails to improve Friday, Discovery would land at Edwards Air Force Base and then be flown to Florida piggy-back on a jumbo jet at a cost of about $1.7 million, NASA officials said.

Thursday, the shuttle's crew performed an evasive maneuver to avoid an unidentified piece of debris believed to be from the mission's third spacewalk, CNN reported Friday.

That spacewalk was part of a 13-day mission to the International Space Station, where the shuttle's crew delivered supplies and made repairs, CNN, reported Friday.