| astronomical events categories |
REMOTE EVENTS with Earth-local consequent events (radioactivity, light, heat, electromagnetic, neutrino)
+ [Type Ia supernovae yield a significant mass of nickel-56 radionuclide not all iron-56 because hours after the nova-event the electron-density is too low to supply EC electron capture, primary radiodecay mode of Ni-56 5.9-day 'half-life' ... upon arrival at Earth amid 2 g dust/m²\light-year² nuclei slow from 10%-light-speed and radiodecay resumes rate]
+ [At 10%-light-speed, nuclei crash to solid-nuclear shockwall, nuclear-fusioning rock, sand, dirt, water,-- whence the epithet, "cosmic dirtbomb" (Not the "dirty bomb", a military weaponry). Potential sources: 1. Asteroids in nebula-orbit around pre-supernova stars of ten solar masses: the nova-event flash-wind mass-fraction crosssection is upwards of 60Ktons/m²\AU² pushing interstellar at 10% light-speed; 2. Grazing coorbiting fast-spinning neutron stars attrit significant surface mass in proton-neutronic tidalwave-mounds gravity-chicaning huge blobs at near light-speed, the blobs' new-iron cores kept compact, cooling, by proportional-expansion in explosive neutron-radiodecay]
[under construction]
A premise discovery under the title,