It wobbles over the short-term.

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If that business wobbles, it will surely have a big impact on the stock price.

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That is good enough to see shifts caused if a star's companion is another star, but it cannot detect the tiny wobbles caused by orbiting planets.

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Despite the wobbles, there are some signs it is working.

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Now astronomers haven't actually seen this planet, but they can tell it's there by the way its star wobbles.

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And it is taking steps to ensure that hedge-fund wobbles do not destabilise the entire financial system.

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It looks like a garden shed mounted precariously on six-metre-high stilts, and the ladder wobbles as I climb.

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