The sun's path across the sky varies with the seasons, so the shadow cast by such a gnomon varies, too.

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Every two minutes its 220, 000 giant glass mirrors, lined up in perfect rows, rotate imperceptibly with a barely audible click, tracking the sun's path across the sky.

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Meteor showers are generated when Earth plows through streams of debris shed by comets on their path around the sun.

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For example, linear actuators help raise or lower a hospital bed or allow solar panels to track the path of the sun.

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As the sun set, Maasai guards lit a path from our tent to a campfire surrounded by flickering lanterns.

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Telecom Italia cut back on Sun servers by adopting the software of Critical Path Inc. for 10 million e-mail accounts.

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Telecom Italia cut back on the need for Sun servers by adopting the software of Critical Path for 10 million e-mail accounts.

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Its path will put it spectacularly close to the Sun in November and if it does not burn up entirely, could be the "comet of the century".

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But it was in the late 70s, while working for ABC in Australia on a radio project, that Fontana's future path as a sound artist begun, when experiencing a total eclipse of the sun in a rainforest.

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"You can maintain a good geometry - the Earth and Sun are always in the same direction, " says Martin Hechler who has helped to design the mission path out to L2.

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