A fascinating Middle Ages-related news item released this week:

“In 2012 researchers found evidence that our planet had been struck by a blast of radiation during the Middle Ages, but there was debate over what kind of cosmic event could have caused this. Now a study suggests it was the result of two black holes or neutron stars merging in our galaxy. This collision would have hurled out vast amounts of energy.

The research is published in the journal Monthly Notices of the Royal Astronomical Society“

To read this news story in full: http://www.bbc.co.uk/news/science-environment-21082617