Arecibo message
E9748
The Arecibo message is a 1974 interstellar radio transmission sent from the Arecibo Observatory toward a distant star cluster, encoding basic information about humanity and Earth in a binary pictorial format.
Aliases (1)
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
SETI experiment
→
interstellar radio message → radio transmission → |
| bitLength | 1679 bits → |
| bitLengthFactorization | 23 × 73 → |
| columns | 73 → |
| contains |
approximate number of DNA nucleotides in human genome
→
atomic numbers of key elements in DNA → average human height → diagram of Arecibo radio telescope → diagram of Solar System → formulas for sugars and bases in DNA nucleotides → graphic representation of DNA double helix → graphic representation of a human figure → human population of Earth in 1974 → indication of Earth as origin of message → numbers 1 to 10 in binary → size of Arecibo radio telescope → |
| dateSent | 1974-11-16 → |
| designedBy |
Carl Sagan
→
Frank Drake → others at Arecibo Observatory → |
| distanceToTarget | about 25,000 light-years → |
| encoding | binary → |
| followedBy |
A Message From Earth
→
Cosmic Call messages → Teen Age Message → |
| format | pictorial message → |
| intendedRecipient | hypothetical extraterrestrial intelligence → |
| language | mathematical and scientific symbolism → |
| modulationType | binary phase-shift keying → |
| name | Arecibo message → |
| notableFeature |
first widely known digital interstellar message
→
uses semiprime bit length to enforce two-dimensional decoding → |
| purpose |
demonstrate capabilities of Arecibo radio telescope
→
symbolic attempt to communicate with extraterrestrial intelligence → |
| relatedTo |
Arecibo Observatory
→
SETI → interstellar communication → |
| rows | 23 → |
| sentBy |
Frank Drake
→
National Astronomy and Ionosphere Center → |
| sentFrom |
Arecibo Observatory
→
Earth → Puerto Rico → |
| target | globular star cluster M13 → |
| targetConstellation |
Heracles
→
surface form: "Hercules"
|
| transmissionDuration | about 3 minutes → |
| transmissionFrequency | 2380 MHz → |
| transmissionPower | about 1000 kW → |
| yearSent | 1974 → |
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form: "Arecibo interstellar radio message"