There appears to be a lot of imagination in this article and little in the way of observable, verifiable evidence. The UM focuses on what are called Fundamental Questions or FQ’s. Some of which for this article come to mind.
Why do they define cosmic dust particles as having minerals that make them magnetic?
How can those magnetic dust particles survive a 12km per second entry into the Earth’s atmosphere and the resultant heat that they acknowledge would accompany it, and maintain their magnetic properties when its been shown that magnetism is destroyed at temperatures that would melt rock or dust particles?
How do they know the makeup of the cosmic dust that fell on the Earth during medievel times?
I could continue, but these are a few to ponder.