The published reports on the discovery of helium report, that helium was discovered by two scientists independently in 1868. French astronomer Jules Janssen observed helium emission lines on 18 August 1868 as a bright yellow line during a total solar eclipse in Guntur, India. On 20 October of the same year, English astronomer Norman Lockyer observed a yellow line in the solar spectrum. He took the observation in West Hampstead, United Kingdom.