What We Are Reading Today: ‘Dynamics and Astrophysics of Galaxies’

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Updated 24 June 2025
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What We Are Reading Today: ‘Dynamics and Astrophysics of Galaxies’

Author: Jo Bovy

This book provides an in-depth introduction to the dynamics, formation, and evolution of galaxies.

Starting with the basics of galactic structure and galactic dynamics, it helps students develop a sophisticated understanding of the orbital structure of spirals, ellipticals, and other types of galaxies.

The book demonstrates how observations led to the discovery that galaxies are dominated by dark matter and explores in detail how structure evolves from the primordial universe to form the halos that host galaxies.


What We Are Reading Today: ‘Ghost Sharks’

Updated 18 January 2026
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What We Are Reading Today: ‘Ghost Sharks’

Authors: David A. Ebert, Jenny M. Kemper, Brittany Finucci, Dominique A. Didier, and Marc Dando

Ghost sharks, also known as chimaeras, are cartilaginous fish related to sharks and rays sharing a common ancestor dating back some 400 million years.

These extraordinary fish are found in virtually every ocean on the planet, and while a few inhabit coastal waters, most live at depths that can make them incredibly difficult to study and observe.

This comprehensive reference book covers every known species of chimaera to date.