现代太阳帆航天器的设计，如纳米帆- D或者日本的行星飞船IKAROS，是以很少但是持续的太阳光为推动力。

Modern solar sail spacecraft designs, like NanoSail-D or the Japanese interplanetary spacecraft IKAROS, rely on the small but continuous pressure from sunlight itself for thrust.

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日本的伊卡洛斯飞船和NASA的纳米帆-D太阳帆的成功发射和展开，已经展示了一个不用任何发动机就可以在太空中徘徊的关键方法。

The successful deployment and operation of the Japanese IKAROS and NASA's NanoSail-D solar sails have demonstrated a key method for getting around in space, without having to use any propellant.

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