18 August 1868 August 17, 2019 Author: Staff French astronomer Pierre Janssen discovers helium. [rdp-wiki-embed url=’https://en.wikipedia.org/wiki/Helium’] Famous Words of Inspiration..."Democratic nations must try to find ways to starve the terrorist and the hijacker of the oxygen of publicity on which they depend." Margaret Thatcher — Click here for more from Margaret Thatcher Related posts: 18 August 1868 18 August 1868 18 August 1868 17 March 1958 28 July 1868 25 July 1868 7 December 1995 21 October 2015 28 September 1868 12 January 1967 Categories: History Tags: 18 August, 1868