That image showing the potential shape of the heliosphere is very interesting, I wonder how it's possible for those weird cutout shapes to form in the heliosphe

That image showing the potential shape of the heliosphere is very interesting, I wonder how it's possible for those weird cutout shapes to form in the heliosphere's tail. Also, this is wild: > Along the evolutionary path, high interstellar cloud densities and ionization fractions have likely compressed the heliosphere down to below 25 au… Evidence is emerging for supernovae explosions as recent as 3 million years ago at only 20–50 pc from the Sun that probably compressed the heliosphere even below the orbit of Saturn and perhaps more, exposing the terrestrial planets to almost the full force of interstellar material and GCRs