Cosmic Call
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Cosmic Call was the name of two sets of interstellar radio messages that were sent from RT-70 in Yevpatoria, Crimea in 1999 (Cosmic Call 1) and 2003 (Cosmic Call 2) to various nearby stars. The messages were designed with noise-resistant format and characters.
The project was funded by Team Encounter, a Texas-based startup that went out of business in 2004.[1]
Both transmissions were at ~150 kW, 5.01 GHz (FSK +/-24 kHz).[2]
Message structure
Each Cosmic Call 1 session had the following structure. The Scientific Part (DDM, BM, AM, and ESM) was sent three times (at 100 bits/s,[3] and the Public Part (PP) was sent once (at 2000 bits/s),[3] according to the following arrangement:
- DDM
BM AM ESM DDM BM AM ESM DDM BM AM ESM PP,
where DDM is the Dutil-Dumas Message, created by Canadian scientists Yvan Dutil and Stephane Dumas, BM is the Braastad Message, AM is the Arecibo Message, and ESM is the Encounter 2001 Staff Message.[3]
Each Cosmic Call 2 session had the following structure:
- DDM2 DDM2 DDM2 AM AM AM BIG BIG BIG BM ESM PP,
where DDM2 is modernized DDM (aka Interstellar Rosetta Stone), BIG is Bilingual Image Glossary.[2] All but the PP were transmitted at 400 bits/sec[2]
Stars targeted
The messages were sent to the following stars:[4]
| Name | Designation HD | Constellation | Date sent | Arrival date | Message |
|---|---|---|---|---|---|
| 16 Cyg A | HD 186408 | Cygnus | May 24, 1999 | November 2069 | Cosmic Call 1 |
| 15 Sge | HD 190406 | Sagitta | June 30, 1999 | February 2057 | Cosmic Call 1 |
| HD 178428 | Sagitta | June 30, 1999 | October 2067 | Cosmic Call 1 | |
| Gl 777 | HD 190360 | Cygnus | July 1, 1999 | April 2051 | Cosmic Call 1 |
| Hip 4872 | Cassiopeia | July 6, 2003 | April 2036 | Cosmic Call 2 | |
| HD 245409 | Orion | July 6, 2003 | August 2040 | Cosmic Call 2 | |
| 55 Cnc | HD 75732 | Cancer | July 6, 2003 | May 2044 | Cosmic Call 2 |
| HD 10307 | Andromeda | July 6, 2003 | September 2044 | Cosmic Call 2 | |
| 47 UMa | HD 95128 | Ursa Major | July 6, 2003 | May 2049 | Cosmic Call 2 |
See also
References
- ^ "Archived copy". Archived from the original on 2009-05-15. Retrieved 2009-03-02.
{{cite web}}: Unknown parameter|deadurl=ignored (|url-status=suggested) (help)CS1 maint: archived copy as title (link) - ^ a b c Synthesis and Transmission of Cosmic Call 2003 Interstellar Radio Message.
- ^ a b c "Broadcast for Extra-Terrestrial Intelligence from Evpatoria Deep Space Center" Report on Cosmic Call 1999
- ^ Передача и поиски разумных сигналов во Вселенной
External links
- http://www.activeseti.org/evpatoria.html Discussion of the Call's "Rosetta Stone" and how it was developed
- http://www.cplire.ru/html/ra&sr/irm/CosmicCall-2003/index.html Discussion of the full content of the message
- Report on Cosmic Call
- http://www3.sympatico.ca/stephane_dumas/CETI/evpatoria.html Evpatoria 2003 discussion with bitmap and image
- http://www.smithsonianmag.com/science-nature/how-couple-guys-built-most-ambitious-alien-outreach-project-ever-180960473/?no-ist History of Cosmic Calls
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