Selected readings on the "Nemesis affair".

• "Extinction of species by periodic comet showers," by Davis, Hut and Muller, Nature 308, 715 (1984).
  • PDF version
  • very large JPEG images
    • page 1
    • page 2
    • page 3

  The next three articles are all included in the second PDF file , so downloading and/or printing it out once will get all three.

• "Terrestrial catastrophism --- Nemesis or Galaxy?", by Clube and Napier, Nature 311, 635 (1984).
  • PDF version (pages 1 and 2 of this PDF)
  • very large JPEG images
    • page 1
    • page 2

• "Dynamical constraints on the mass and perihelion distance of Nemesis and the stability of its orbit", by Hills, Nature 311, 636 (1984).
  • PDF version (pages 2, 3, and 4 of PDF)
  • very large JPEG images
    • page 1
    • page 2
    • page 3

• "How stable is an astronomical clock that can trigger mass extinctions on Earth?" by Hut, Nature 311, 638 (1984).
  • PDF version (pages 4, 5, and 6 of PDF)
  • very large JPEG images
    • page 1
    • page 2
    • page 3

  Finally, two actual "letters" commenting on papers.

• "Matters arising" Nature 313, 503 (1985).
  • PDF version
  • very large JPEG images
    • page 1