Panspermia in a Milky Way–like Galaxy

We study the process of panspermia in Milky Way–like galaxies by modeling probability successful travel organic compounds between stars harboring potentially habitable planets. To this end, we apply modified habitability recipe Gobat & Hong to a model galaxy from McMaster Unbiased Galaxy Simulations suite zoom-in cosmological simulations. find that, unlike habitability, which only occupies narrow dynamic range over entire galaxy, can vary orders magnitude inner (R, b = 1–4 kpc) and outer disk. However, small fraction star particles have very large values for and, consequently, where is more effective than prebiotic evolution much lower naïve expectations based on ratio natural habitability.