1836-1920 English astronomer who, in 1868, discovered helium, which he found in the sun's atmosphere; its existence on earth was not known until 27 years later. Lockyer began his spectroscopic observation of sunspots in 1866, and discovered that...

Sir Joseph Norman Lockyer (May 17, 1836 – August 16, 1920) was an English scientist and astronomer. Along with the French scientist Pierre Janssen he is credited with discovering the gas...