When Thomas Greytak and Daniel Kleppner at MIT started out 22 years ago to form a Bose–Einstein condensate by cooling and compressing a gas of hydrogen atoms, they did not realize just how arduous the journey would be. But their ingenuity and perseverance paid off this past summer when graduate students Dale Fried and Tom Killian awakened them at their homes in the early morning hours of 12 June to report evidence of a Bose condensate in their hydrogen trap.

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