Today, that is, on the 26th of December, Marie Curie, her husband Pierre, and Gustavé Bemont announced in the Comptes rendus de l’Académie des Sciences in 1898 that they discovered a new element which they proposed to name radium.
Nowadays, an isotope of radium is of medical use against metastatic bone cancer, relying on the isotope’s release of helium nuclei (so-called α-decay) which destroy cells within a relatively small volume of tissue.
An English translation of the original article is available online. The original can be read here (pp. 1215-1217):
@kjrunia is reading mathematics and theoretical physics (final year) in England, at The Open University, Walton Hall, Milton Keynes. He also works on coding for the Mars Rover of the university’s Planetary Robotics Team.