The sands of time are running out for the central star of this hourglass-shaped planetary nebula.

在这一酷似沙漏形状的星云内，“时间之沙”即将从中央星之中流逝殆尽。

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Hubble's sharp view is able to resolve patterns and ripples in the nebula very close to the central star that is not visible from the ground.

借助于先进的观测成像设备，“哈勃”拍摄到与中部恒星非常靠近区域出现的图案和波纹，而这些都是在地面上无法观测到的。

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IRAS 23166 + 1655 is just starting this process and the central star has yet to emerge from the cocoon of enveloping dust.

IRAS 23166 + 1655恰好处于这个过程的开端，而中央的恒星也正在从蚕茧一般的尘埃中显露出来。

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Professor Geraghty says that "Star Trek's" message of hope,community, and self-improvement are central to American culture,history and identity.

VOA: special.2009.06.05

Resembling the towers of the Eagle Nebula, columns of dust shown in the image are oriented toward the central star cluster, pointing to its role in stellar birth.

CNN: Stellar nursery in nearby galaxy teems with activity

This book, which describes the descendants of a civilisation that has converted the material in its planets into a giant ringlike structure around its sun, was inspired by Freeman Dyson's idea that a truly technologically advanced species would endeavour to capture as much light as possible by building a spherical shell around its central star.

ECONOMIST: Is it time for a new approach to finding extraterrestrials?

At the moment, foreign central banks are the star bidders every time these bonds are put up for auction.

ECONOMIST: The unstoppable, surging yen