When kids ask the age-old question “why is the sky blue,” try this simple science experiment that draws upon John Tyndall’s work from Ireland in the 1860s. Tyndall used a clear tube and smoke particles to demonstrate how blue light scatters more than other colors; this phenomenon explains why our atmosphere gives the sky its […]
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Cassini was a highly complex interplanetary spacecraft. Featuring 12 scientific instruments like imaging cameras, radar, spectrometers, magnetometers and spectrographs – its primary mission was to conduct in-depth studies of Saturn, its rings, and moons. Its orbiter was powered by three radioisotope thermoelectric generators (RTGs). These produced electricity using plutonium-238 decay. It was a joint NASA/ESA
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