50 years ago, the quest for superheavy elements was just getting started
Excerpt from the September 8, 1973 issue of Science News
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
Searching for superheavies — Science 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.