In 1868, the spectral pattern of a yet unknown element was observed within light emitted from the chromosphere of the Sun during a solar eclipse. Known only to exist in the Sun at the time, this new element was given a name derived from helios, the Greek word for Sun. Though it was later shown to exist terrestrially (observed within the lava of Mount Vesuvius 14 years later), helium remains the first and only element to see its initial discovery somewhere other than Earth.