最近的一次是在2003年，失败的原因是气球在升空之前破掉了。
The most recent attempt, in 2003, failed when his balloon ruptured before takeoff.
一只在南极洲升空的高空气球解答了宇宙学的一个最大问题：我们的宇宙是“平的”。
A high-flying balloon which soared over Antarctica may have answered one of cosmology's greatest questions by revealing that the universe may be "flat".
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