At the campus of French engineering school Ecole Supérieure des Mines de Paris sits this astronomical sculpture by Jean Salins, who created it in 1980. Four times a year, when our planet is in the appropriate alignment with the sun, the shadow it casts onto the ground spells out either “solstice” or “equinoxe.” [via Neatorama]

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Matt Richardson

Matt Richardson

Matt Richardson is a San Francisco-based creative technologist and Contributing Editor at MAKE. He’s the co-author of Getting Started with Raspberry Pi and the author of Getting Started with BeagleBone.