18 August 1868

Posted on by

French astronomer Pierre Janssen discovers helium.

[rdp-wiki-embed url=’https://en.wikipedia.org/wiki/Helium’]

Famous Words of Inspiration...
"Imagination will often carry us to worlds that never were. But without it, we go nowhere."
Carl Sagan
— Click here for more from Carl Sagan
   

Related posts:

  1. 18 August 1868
  2. 18 August 1868
  3. 18 August 1868
  4. 17 March 1958
  5. 28 July 1868
  6. 25 July 1868
  7. 7 December 1995
  8. 21 October 2015
  9. 28 September 1868
  10. 12 January 1967