Posted: Mar 30, 2017 1:13 am
by PleaseReadThis
Here is a chart of the detectable flux of cosmic rays at various energies from the "cosmic ray" wiki page:
Image
By Sven Lafebre - own work, after Swordy.[1], CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=1555202

Looks like there are all sorts of particles with more than 155 GeV. While this might not amount to enough to account for the mass needed, it shows qualitatively that the Earth is not a closed system and maybe we just haven't found all the contributors.