Would an antimatter orange have fallen on Newton's head like an apple? Physicists have not provided a serious answer to this question, for lack of being able to test it.
The relation between matter and antimatter has puzzled scientists and sparked experiments on a gigantic scale. The physicist Marie-Hélène Schune explains.
Giant experiments all over the world are trying to break the secret of neutrinos, the elusive and unusual elementary particles discovered in 1956. Their success could change our understanding of...