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 (in 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. Scientific Part (DDM, BM, AM, and ESM) was sent three times (at 100 bits/s,[3] and 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 Dutil-Dumas Message, created by Canadian scientists Yvan Dutil and Stephane Dumas, BM is Braastad Message, AM is Arecibo Message, ESM is 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 was 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
- ↑ http://cs.astronomy.com/asycs/forums/p/17428/295175.aspx
- ↑ 2.0 2.1 2.2 Synthesis and Transmission of Cosmic Call 2003 Interstellar Radio Message.
- ↑ 3.0 3.1 3.2 "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
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