#HTE

Exploding alien bodies’ space death-rays gave Earth its radiation cloak

It says so right here, in this paper

Scientists have solved a 60-year mystery by figuring out the source of harmful and highly energetic electrons whizzing around in Earth’s inner radiation belt.…

http://go.theregister.com/feed/www.theregister.co.uk/2017/12/14/dead_stars_cosmic_rays_earth/