50 years ago, the quest for superheavy elements was just getting started

Excerpt from the September 8, 1973 issue of Science News

illustration of blue and green atoms inside the superheavy element tennessine

The superheavy element tennessine (illustrated) joined the periodic table in 2015. Created by smashing atoms in a particle accelerator, the element’s half-life is less than a second.

Kwei-Yu Chu/Lawrence Livermore National Laboratory

cover of the September 8, 1973 of Science News

Searching for superheaviesScience News, September 8, 1973

Physicists and chemists have been actively searching for superheavy elements, substances with atomic weights and numbers greater than the 105 [elements] now known.