Pierre Janssen 1824-1907
The French astronomer Pierre Janssen was born on February 22nd 1824, he was a solar astronomer who co discovered with Norman Lockyer the lines of Helium in the Sun, which at that time were yet to be discovered on Earth.
He was nothing if not adventurous and attempted to observe the solar eclipse of 22nd December 1870. He was trapped in Paris at the time during the Franco Prussian war. He escaped in a balloon to watch the eclipse but sadly the weather was poor.
He died in France on December 23rd 1907.