Aug. 18, 1868: Helium is discovered
During the total solar eclipse of Aug. 18, 1868, two astronomers, Pierre Jules CΓ©sar Janssen of France and J. Norman Lockyer of England, each independently discovered a new line in the Sunβs spectrum. Lockyer thought it showed an undiscovered element, which he named helium. (In Greek mythology, Helios was the Sun god.) Although scientists wouldContinue reading "Aug. 18, 1868: Helium is discovered"
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