ALICE SPRINGS, Australia (Reuters) - A bold round-the-world balloon attempt delayed for two weeks by wind was put off again on Tuesday — because of rain showers over mission control in outback Australia. The 40-storey balloon is designed to fly 39 km (24 miles) high on the edge of space above the vagaries of the weather. But it has been unable to lift off safely because of steady winds over Australia‘s dustry red centre since the original launch date of December 27. Organisers said on Tuesday that rain over Alice Springs had delayed another scheduled launch, but they would try again on Wednesday. The balloon will be manned by U.S. millionaire David Liniger and Australian ballooning champion John Wallington. No other team has yet attempted to fly so high, where atmospheric pressure will be only 1/250th of that at ground level and crew members will have to wear Russian space suits. If successful, their westward journey around the world is expected to take 16 to 18 days.