Cosmic Call was the name of two interstellar radio messages that were sent from RT-70 in Yevpatoria in 1999 and 2003 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.
Each Cosmic Call 1 session had the following structure. Scientific Part (DDM, BM, AM, and ESM) was sent three times, and Public Part (PP) was sent once, 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; more details present at Report on Cosmic Call.
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, BIG is Bilingual Image Glossary; more details present at Synthesis and Transmission of Cosmic Call 2003 Interstellar Radio Message.
The messages were sent to the following stars:
| 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 |
Read more about Cosmic Call: See Also
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