richard b, chad h, stephen g listen and communicate with intelligent life
TRANSCRIPT
Richard B, Chad H, Stephen G
Listen and Communicate with
Intelligent Life
• 1820: Carl Friedrich Gauss - reflecting sunlight towards the planets, giant triangle in the Siberian forest
• 1840: Joseph von Littrow - light a 30 km wide canal ablaze with kerosene
• 1869: Charles Cros - use a parabolic mirror to flash messages• 1974: Frank Drake - First radio message "Arecibo Message"
• Gold plates on Pioneer 10 and 11• Golden record on Voyagers 1 and 2• Social Network Bebo broadcasts 501 user submitted messages• Cosmic Calls 1 and 2
Early Broadcast Attempts
Arecibo Message
Broadcast on November 16th 1974 from the Arecibo radio
telescope.
Aimed toward globular star cluster M13.
M13 is 25,000 light years away.
1 2 3 4 5 6 7 8 9 10
Start marker
Numbers in binary
Our base number system
DNA Elements
H C N O P1 6 7 8 15
Atomic Number
Nucleotides
Deoxyribose Adenine Thymine Deoxyribose
Phosphate Phosphate
Deoxyribose Cytosine Guanine Deoxyribose
Phosphate Phosphate
H C N O P
Double Helix DNA
Pictorial representation of double helix.
2 middle rows represent approx. 4.3 billion in binary to
represent number of nucleotides.
Humanity
Middle:Representati
onof a
human
Left:Averag
e human height
Right:Human
population
Solar System
Give location of earth and general not to scale size representation.
Telescope
Top section is a pictograph of the telescope
emphasizing the parabolic shape
Bottom 2 rows communicate the
telescopes diameter
•1960 – Frank Drake•1960’s – Soviets•1970’s – American Astronomers•1992 – NASA’s Ames Research Center
–Jet Propulsion Laboratory•1995 – SETI Institute
•Project Phoenix•Allen Telescope Array
•1999 – UC Berkeley SETI@home
SETI(Search for Extraterrestrial Intelligence)
• 43 X 135
• 3 Radio Frequencies
• Visual, Informational, and Musical
• Compartments
H.E.Y. Message
Why Radio Waves?Radio Waves have a long
wavelength
Dust in space or atmospheric conditions can decay short wavelengths more easily.
Insignificant radio background.
Cosmic microwave radiation is 7.35 cm.
Binary Number System
1 2 3 4 5 6 7 8 9 10
Number Marker
Elements
Atomic Numbers
H C N O Mg Si P
1 6 7 8 12 14 15
Earth's Composition
SiO2 MgO H2O N2 O2
Earth's Crust Liquid Earth's Atmosphere
Nucleotides
Radioactive Decay
Reaction happens at a set rate
Carbon 14 Nitrogen 14
Distances
Earth to Kepler 22b
Pictorial Representation
Time/Distance
Earth to the center of the Milky Way
Music
Opening 6 pitches to Igor Stravinsky's
Le sacre du printemps
Selected Tones (Hz)
C 4,186.01B 3,951.07G 3,135.96E 2,637.02B 3,951.07A 3,520.00
Pictures/Locations
Arecibo Message73 x 23 (210
Bytes)H.E.Y.135 x 43 (726 Bytes)
3.5 X larger than Arecibo (1974)
Operating range 0.1-116 GHz
48 X Arecibo transmission
HEY Transmission1.19 GHZ
Green Bank Telescope (GBT)
Green Bank, West Virginia
Cost of H.E.Y. transmission
1000Kw Power supply
10.3 minutes/transmission
$15.83/transmission
$1,583.33
NASA 2013 Budget $18.7 Billion
Transmission Date (H.E.Y. Day)
December 23, 2013
Questions?