Unsettled Christianity

Gloria Dei homo vivens – St Irenaeus
November 2nd, 2016 by Joel Watts

neutron stars are the universe’s endoplasmic reticulum

brain-cell-the-universe-birth-of-a-cell-death-of-a-star-eye-nebula

A striking shape was recently observed for the endoplasmic reticulum, a cellular organelle consisting of stacked sheets connected by helical ramps [Terasaki et al., Cell 154, 285 (2013)]. This shape is interesting both for its biological function, to synthesize proteins using an increased surface area for ribosome factories, and its geometric properties that may be insensitive to details of the microscopic interactions. In the present work, we find very similar shapes in our molecular dynamics simulations of the nuclear pasta phases of dense nuclear matter that are expected deep in the crust of neutron stars. There are dramatic differences between nuclear pasta and terrestrial cell biology. Nuclear pasta is 14 orders of magnitude denser than the aqueous environs of the cell nucleus and involves strong interactions between protons and neutrons, while cellular-scale biology is dominated by the entropy of water and complex assemblies of biomolecules. Nonetheless, the very similar geometry suggests both systems may have similar coarse-grained dynamics and that the shapes are indeed determined by geometrical considerations, independent of microscopic details. Many of our simulations self-assemble into flat sheets connected by helical ramps. These ramps may impact the thermal and electrical conductivities, viscosity, shear modulus, and breaking strain of neutron star crust. The interaction we use, with Coulomb frustration, may provide a simple model system that reproduces many biologically important shapes.

The full thing is here.

Joel Watts
Watts holds a MA in Theological Studies from United Theological Seminary. He is currently a Ph.D. student at the University of the Free State, analyzing Paul’s model of atonement in Galatians, as well as seeking an MA in Clinical Mental Health at Adams State University. He is the author of Mimetic Criticism of the Gospel of Mark: Introduction and Commentary (Wipf and Stock, 2013), a co-editor and contributor to From Fear to Faith: Stories of Hitting Spiritual Walls (Energion, 2013), and Praying in God's Theater, Meditations on the Book of Revelation (Wipf and Stock, 2014).

Comments

One Response to “neutron stars are the universe’s endoplasmic reticulum”
  1. At first glance, I thought this post was about some type of cosmic proctology exam… :-0

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