August 18, 1868 –
French astronomer Pierre Jules César Janssen discovers Helium, while analyzing the chromosphere of the sun during a total solar eclipse in Guntur, India, on this date.
Because helium was found in the Sun before it was found on Earth, its name comes from the Greek word for Sun, helios. It marks the first discovery of an “extraterrestrial” element, since helium hadn’t yet been discovered on Earth.
And so it goes
The Haus of Dcaligari 