Scientists know planets form out of the discs of material around young stars, but theory says the transition from dust disc to planetary system is rapid and few objects are caught during this phase.

科学家们知道行星是从年轻的恒星周围的物质盘中形成的，但是理论认为从尘埃盘到行星系统的转变非常快，人们很少见到在这一阶段的物体。

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"All observations beyond our galaxy are obscured by the disc of the Milky Way," he points out, so we need to be careful how we interpret them.

“所有在我们银河系更远处的观察研究都会因银河系的断开而变得难以解释”，他指出，所以怎样来解释它们，我们需要谨慎小心。

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Researchers believe that our moon was created when a giant object the size of Mars hit the early Earth, sending out a disc of debris orbiting our planet.

研究学者认为，我们的月球是在一个巨大如火星的物体撞击地球时形成的，碰撞产生圆形的碎屑沿着地球轨道飞行。

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Although Netflix is phasing out the disc service, the company hung on to more of the DVD subscribers than it anticipated during the fourth quarter.

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The infra-red light from dust heated by a star has a much longer wavelength ie, is cooler than most of the light from the star itself, so a camera tuned to the right wavelength can pick out a dust disc without being totally blinded by the stellar glare.

ECONOMIST: Dusty genesis

Some of Richard Wilson's previous works include a large disc sawn out of the facade of a building for the Liverpool Year of Culture and a section of ship moored near the Millennium Dome in 2000, cut vertically to show its cross-section.

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