• Searching for Interstellar Communications (copy) - Guiseppe Cocconi and Philip Morrison
• Communicating with Alien Intelligence - Marvin Minsky
• Interstellar Comunication - Phillip Morrison
• The Quest for Extraterrestrial Intelligence - Carl Sagan
• The Psychology of Interstellar Communication - Michael Arbib
• Challenges of Interstellar Message-Making, Messages to the stars, Altruism: A Scientific Perspective - Douglas Vakoch
• Extraterrestrial Intelligence: Communication - William Bainbridge
• Communicating with Aliens: the Psychological Dimension of Dialogue - Anthony Judge
• Vaults in Vaccuum, A Portrait of Humanity - Greg Benford
• Anticryptography - Brian McConnell
• Interstellar Radio Messages - Alexander Zaitsev
• "Error Correction Scheme in Active SETI - Yvan Dutil & Stephane Dumas

• Astraglossa - Lancelot Hogben
• LINCOS - Hans Freudenthal
• A Language Based on the Fundamental Facts of Science - C. DeVito and R. Oehrle
• The Contact Project - David Levine
• The Arcturus Project - Ed Toton
• SETI Puzzle - Martin C. Martin
• Dutil & Dumas' 2002 message
• CosmicOS - Paul Fitzpatrick

• Arecibo Message (picture)
  • Arecibo Message Decoded
• Pioneer plaque (picture)
• Voyager record (picture)
• Encounter 2001 message (also known as Cosmic Call 1999)
  • Dutil & Dumas' 2001 message
  • Braastad Message
  • Repeat of 1974 Arecibo Message
  • Encounter 2001 Staff Message
• Teen-Age Message
• Team Encounter 2003 messages (Cosmic Call 2003)
  • Dutil & Dumas' 2003 message
  • Repeat of 1974 Arecibo Message
  • Ella AI program
  • Assorted text, images, music, and video

• Search for Extraterrestrial Intelligence

• Message Gallery
• Encode/Decode Binary Pictures
• Periodic Table of Elements
• Digits of Pi
• Electron Configuration
• Chemistry Equations
• Line Spectrum of Hydrogen
• Mathematical Constants
• Physical Constants
• Physics Concepts
• Planetary Data
• Hubble Constant
• Hubble Constant values
• Cosmological Constant value
• Critical density
• Astrophysical constants
• Science Links
• Star Classification
• Princeton Pulsar Map, Princeton Pulsar Catalog, Simple Pulsar Catalog, Pulsar Tattoo
• Martindale's Calculators

	Element   Symbol  Atomic Number

	Hydrogen    H          1       
	Carbon      C          6       
	Nitrogen    N          7       
	Oxygen      O          8       
	Phosphorus  P         15       


	Group         Formula

	Deoxyribose   C5OH7
	Phosphate     OP
	Adenine       C5H4N5
	Thymine       C5H5N2O2
	Cytosine      C4H4N3O
	Guanine       C5H4N5O


	Photosynthesis
	 6 CO2  +  6H2O  -------->  C6H12O6  +  6 O2 
	 6[{6},2{8}]  +  6[2{1},{8}]  ->  [6{6},12{1},6{8}]  +  6[2{8}]

	Propane Combustion
	 C3H8  +  5 O2  ----->  3 H2O  +  CO2  +  Heat

1 s  = 1.42 x 10^9 (time of hydrogen change in state)
1 g  = 6 x 10^23 (mass of hydrogen)
1 cm = 1/21 (wavelength of hydrogen emission radiation)