List of interstellar radio messages
This is a list of notable interstellar radio messages (IRMs) transmitted from Earth. Many of these were sent in the aim of searching for extra-terrestrial intelligence (SETI), and are often called 'active SETI' or 'METI' (Messages to Extra-Terrestrial Intelligence) projects.
01Notable transmissions
Stars to which messages were sent include:
| Target | Distance (ly) | Sent | Expected Arrival | Message |
|---|---|---|---|---|
| Messier 13 | 25,000 | 16 November 1974 | 25974 | Arecibo message |
| Altair | 16.7 | 15 August 1983 | 2000 | Message to Altair (CALL to the COSMOS'83) |
| 16 Cyg A | 69 | 24 May 1999 | 2068 | Cosmic Call 1 |
| 15 Sge | 57 | 30 June 1999 | 2056 | |
| HD 178428 | 67 | 30 June 1999 | 2066 | |
| Gl 777 | 52 | 1 July 1999 | 2051 | |
| HD 197076 | 68 | 29 August 2001 | 2069 | Teen Age Message |
| 47 UMa | 46 | 3 September 2001 | 2047 | |
| 37 Gem | 56 | 3 September 2001 | 2057 | |
| HD 126053 | 57 | 3 September 2001 | 2058 | |
| HD 76151 | 55 | 4 September 2001 | 2052 | |
| HD 193664 | 57 | 4 September 2001 | 2058 | |
| Gliese 49 | 32 | 6 July 2003 | 2036 | Cosmic Call 2 |
| Gliese 208 | 37 | 6 July 2003 | 2040 | |
| 55 Cnc | 41 | 6 July 2003 | 2044 | |
| HD 10307 | 41 | 6 July 2003 | 2044 | |
| 47 UMa | 46 | 6 July 2003 | 2049 | |
| Polaris | 433 | 4 February 2008 | 2439 | Across the Universe |
| Gliese 581 | 20.3 | 9 October 2008 | 2029 | A Message From Earth |
| Gliese 581 | 20.3 | 28 August 2009 | 2030 | Hello From Earth |
| TZ Arietis | 14.6 | 9 November 2009 | 2024 | RuBisCo Stars (RuBisCO genetic sequence) |
| Teegarden's Star | 12.5 | 9 November 2009 | 2021 | |
| Kappa¹ Ceti | 29.8 | 10 November 2009 | 2039 | |
| HIP 34511 | 140 | 15 August 2012 | 2152 | Wow! Signal Reply |
| 37 Gem (HIP 33277) | 57 | 15 August 2012 | 2069 | |
| HIP 43587 | 41 | 15 August 2012 | 2053 | |
| Gliese 526 | 17.6 | 2013 | 2031 | Lone Signal |
| Polaris | 433 | 10 October 2016 | 2450 | A Simple Response to an Elemental Message |
| Luyten b | 12.36 | 16 October 2017 | 2030 | Sónar Calling GJ273b |
| 14 May 2018 | 2031 |
02Other projects
Some other projects include:
- Poetica Vaginal (1986)
- Discovery Channel Message (2005)
- Craigslist Messages (2005)
- CNES Cosmic Connexion (2006)
- Doritos Advert (2008)
- Sent Forever
- Penguin UK
Whilst not an interstellar message, it is also worth mentioning The Morse Message (1962), which was sent to Venus.
Sources and credits
This article is adapted from the Wikipedia article “List of interstellar radio messages”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
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