Would Stirling engines be good in space?

My knowledge of Stirling engines is that they work via a heat difference and are extremely heavy when used on a larger scale. This makes the use of them on vehicles a strange choice when there are many other lighter engines. Still, with this information it seems that space vehicles would find the Stirling engine of great help, as space I believe is mostly devoid of heat and weight is mostly not an isend.

Could I I use them having the cold side in the vacuum of space and the warm in the ship or is there a more viable option?

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Would Stirling engines be good in space?

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