From a telescope network that spans much of the globe to a psychology study that spans 67 countries, here are the biggest science experiments on the planet.

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Sometimes science needs to go big. From telescopes spanning the globe to particle accelerators that would take over 24 hours to walk around, these experiments are among the largest ever conducted.

When you buy through links on our articles, Future and its syndication partners may earn a commission. Sometimes science needs to go big. From telescopes spanning the globe to particle accelerators ...