Excess antielectrons aren’t from nearby dead stars, study says
The finding keeps open the possibility that the particles come from dark matter
![HAWC experiment in Mexico](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2017/11/111617_EC_positron_feat.jpg?fit=860%2C460&ssl=1)
WATCHING LIKE A HAWC The HAWC experiment near Puebla, Mexico, uses more than 300 tanks of water to detect the signatures of gamma rays. Its new observations have reignited a debate about the source of unexplained antimatter particles from space.
J. Goodman