The Sudbury Neutrino telescope in Canada. The 12-meter sphere contains 12,000 detectors that watch for the light from neutrinos that streak through the water filling the interior of the sphere. (Courtesy - Stanford Solar Center)
This image appears in the #59: Where did all the Neutrinos go? Technology Through Time article.
Earth's climate was seriously chilled during the Maunder Minimum (1645-1715) when no 11-year sunspot cycles were detected.