listening to the dawn of the universe, the age of reionisation,
"Local flavour" http://www.abc.net.au/news/science/2018-03-01/signal-from-universes-first-stars-deepens-dark-matter-mystery/9479940

Astrokatie in scientific American
https://blogs.scientificamerican.com/observations/a-potentially-game-changing-message-from-the-dawn-of-time/
Not confirmed yet, but there are other unpublished experiments looking at this "If this signal really is detecting a new kind of dark matter interaction"