Dr Steinhauer and his colleagues created a condensate out of a gas of rubidium atoms held in a magnetic trap.

Steinhauer博士和同事从盛在磁圈里的铷原子气体中制出冷凝物。

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Dr Steinhauer and his colleagues have not yet detected sonic Hawking radiation, but they have taken the first step: they have produced a dumb hole.

Steinhauer博士和同事至今未发现霍金声辐射，但他们已迈出第一步：创造出哑洞。

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Conrad Steinhauer digitally edited images of his family members into a recent photo of his father's boyhood home in Fresno, California.

CNN: Connecting the past to present tougher than it looks

Steinhauer never lived at the house, but he does go back to visit it from time to time to see how the neighborhood has changed.

CNN: Connecting the past to present tougher than it looks

While Steinhauer saw the change of time first-hand, some iReporters found that the landscape in other parts of the world retained structures from ancient times.

CNN: Connecting the past to present tougher than it looks