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.
Notable transmissions
editStars 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) [1][2] |
| 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)[3] |
| Teegarden's Star | 12.5 | 9 November 2009 | 2021 | |
| Kappa¹ Ceti | 29.8 | 10 November 2009 | 2039 | |
| HIP 34511 | 140[4] | 15 August 2012 | 2152 | Wow! Signal Reply[5] |
| 37 Gem (HIP 33277) | 57[6] | 15 August 2012 | 2069 | |
| HIP 43587 | 41[7] | 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[8] |
| Luyten b | 12.36 | 16 October 2017 | 2030 | Sónar Calling GJ273b[9][10] |
| 14 May 2018 | 2031 |
Other projects
editSome other projects include:
- Poetica Vaginal (1986)[11][12]
- Discovery Channel Message (2005)[citation needed]
- Craigslist Messages (2005)[13][14]
- CNES Cosmic Connexion (2006)[15]
- Doritos Advert (2008)[16]
- Sent Forever[17]
- Penguin UK[18]
Whilst not an interstellar message, it is also worth mentioning The Morse Message (1962),[19] which was sent to Venus.
References
edit- ↑ NAGAUCHI, Yosuke (12 May 2008). "【科学】届け宇宙人への電子メール ２５年前に送信、７年後にも返信来る！？ (1/2ページ)". MSN産経ニュース (MSN Sankei News) (in Japanese). Archived from the original on 17 May 2008. Retrieved 18 February 2025.
- ↑ Endo, Kazuki (20 August 2023). "'Anybody there?' Astronomers waiting for a reply from Altai". The Asahi Shimbun. Retrieved 18 February 2025.
- ↑ Chandler, David L. (24 November 2009), ET: Check your voicemail, MIT News
- ↑ "HIP 34511". simbad.u-strasbg.fr. Retrieved 18 February 2025.
- ↑ Memmott, Mark (15 August 2012). "Will E.T. Hear Us? Reply To 'WOW! Signal' Gets Beamed Into Space Today". NPR. Retrieved 18 February 2025.
- ↑ "HIP 33277". simbad.u-strasbg.fr. Retrieved 18 February 2025.
- ↑ "HIP 43587". simbad.u-strasbg.fr. Retrieved 18 February 2025.
- ↑ "A Simple Response". European Space Agency official website. 28 July 2016. Retrieved 6 October 2016.
- ↑ "How to send a message to another planet". The Economist. 16 November 2017. Retrieved 19 November 2017.
- ↑ "Sónar Calling GJ 273b". Sónar Calling. Sónar Music Festival. Retrieved 1 May 2021.
- ↑ "BIOMEDIALE". 13 February 2009. Archived from the original on 13 February 2009. Retrieved 9 March 2024.
- ↑ Gibbs, W. Wayt (1 April 2001). "Art as a Form of Life". Scientific American. doi:10.1038/scientificamerican0401-40. Archived (PDF) from the original on 20 June 2024. Retrieved 2 April 2025.
- ↑ Deep Space Network Frequently Asked Questions, Deep Space Communications Network, archived from the original on 4 January 2010
- ↑ List in Space: Calling the Cosmos Gets Commercial, Space_com, 23 March 2005
- ↑ Connecting with the Cosmos, CNES, 26 January 2006, archived from the original on 13 May 2010
- ↑ Doritos Makes History With World's First ET Advert, Spacedaily.com, 13 June 2008
- ↑ Harris, Mark (16 September 2009), Is Sent Forever the worst Apollo 11 tie-in?, TechRadar, archived from the original on 2 March 2010
- ↑ Colvile, Robert (9 February 2010), Calling ET: Your chance to send a message to alien life, The Daily Telegraph, archived from the original on 11 February 2010
- ↑ An Awkward History of Our Space Transmissions