57歲的尤斯特斯是在參與「完美太空發展公司」(Paragon Space Development Corporation)的平流層探索計畫(Stratospheric Explorer project)時,嘗試這項大膽行為。尤斯特斯在新墨西哥州羅斯威爾上空,利用特製的太空裝和氦氣球組, 以每分鐘305公尺的速度,慢慢上升。尤斯特斯大約花了2個半小時達到預定的高度。
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