Dark Matter: Introduction

  title={Dark Matter: Introduction},
  author={Martin J. Rees},
  journal={arXiv: Astrophysics},
  • M. Rees
  • Published 2 February 2004
  • Physics
  • arXiv: Astrophysics
This short review was prepared as an introduction to the Royal Society's 'Dark Matter' conference. It addresses the embarrassing fact that 95% of the universe is unaccounted for. Favoured dark matter candidates are axions or weakly-interacting particles that have survived from the very early universe, but more exotic options cannot be excluded. Experimental searches are being made for the 'dark' particles but we have indirect clues to their nature too. Comparisons of data (from, eg… 
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