IMMATERIAL OBJECTS IN DEEP SPACE

Non-exhaustive list of intangible proof of our presence into interstellar space:

  • an ever-growing Earth-centered electromagnetic bubble created in the early 50’s (radio and television broadcasts, radar and nuclear explosions pulses, etc.);

  • brief radio messages we’ve beamed to the stars since the 60’s and also known as Active SETI (Active Search for Extraterrestrial Intelligence) or METI (Messages for Extraterrestrial Intelligence) broadcastings.

As these immaterial artifacts are travelling at the speed of light, they are the furthest witnesses of our existence, way beyond our solar system. However and despite their strength, the signals will gradually faint with the distance.

Over 45 immaterial artifacts have been identified.

typemissionsent toquantitylengthdistance (ly)date/epoch (UTC)
Electromagnetic wavesHUMAN ELECTROMAGNETIC ACTIVITY BUBBLE(all directions)(constant)about 70(since the 50's)
Interstellar Radio Message (IRM)MORSE MESSAGELibrae12m 10s?61,08November 19, 1962
Interstellar Radio Message (IRM)MORSE MESSAGELibrae15m 10s?61,08November 24, 1962
Interstellar Radio Message (IRM)ARECIBO MESSAGEHerculis1less than 3 minutes49,08November 16, 1974
Interstellar Radio Message (IRM)ALTAIR MESSAGEAquilae??40,33August 15, 1983
Interstellar Radio Message (IRM)POETICA VAGINALEridani/Ceti120 minutes?about 38(in 1986)
Interstellar Radio Message (IRM)MESSAGES DES HOMMES A L'UNIVERSMilky Way galaxy center1?36,92January 26, 1987
Interstellar Radio Message (IRM)NASDA COSMIC COLLEGEVirginis??26,33August 19, 1997
Interstellar Radio Message (IRM)COSMIC CALL 1 (TEAM ENCOUNTER)Cygni13h 55m24,58May 24, 1999
Interstellar Radio Message (IRM)COSMIC CALL 1 (TEAM ENCOUNTER)Sagittae13h 55m24,42June 30, 1999
Interstellar Radio Message (IRM)COSMIC CALL 1 (TEAM ENCOUNTER)Sagittae13h 55m24,42June 30, 1999
Interstellar Radio Message (IRM)COSMIC CALL 1 (TEAM ENCOUNTER)Cygni13h 55m24,42July 1, 1999
Interstellar Radio Message (IRM)TEEN AGE MESSAGEDelphini12h 12m22,33August 29, 2001
Interstellar Radio Message (IRM)TEEN AGE MESSAGEVirginis12h 12m22,25September 3, 2001
Interstellar Radio Message (IRM)TEEN AGE MESSAGEUrsae Majoris12h 12m22,25September 3, 2001
Interstellar Radio Message (IRM)TEEN AGE MESSAGEGeminorum12h 12m22,25September 3, 2001
Interstellar Radio Message (IRM)TEEN AGE MESSAGEHydrae12h 12m22,25September 4, 2001
Interstellar Radio Message (IRM)TEEN AGE MESSAGEDraconis12h 12m22,25September 4, 2001
Interstellar Radio Message (IRM)COSMIC CALL 2 (TEAM ENCOUNTER)Cassiopeiae12h 05m20,42July 6, 2003
Interstellar Radio Message (IRM)COSMIC CALL 2 (TEAM ENCOUNTER)Orionis12h 05m20,42July 6, 2003
Interstellar Radio Message (IRM)COSMIC CALL 2 (TEAM ENCOUNTER)Cancri12h 05m20,42July 6, 2003
Interstellar Radio Message (IRM)COSMIC CALL 2 (TEAM ENCOUNTER)Andromeda12h 05m20,42July 6, 2003
Interstellar Radio Message (IRM)COSMIC CALL 2 (TEAM ENCOUNTER)Ursae Majoris12h 05m20,42July 6, 2003
Interstellar Radio Message (IRM)DISCOVERY CHANNEL MESSAGE???about 19(in 2005?)
Interstellar Radio Message (IRM)CRAIGSLIST MESSAGES (DEEP SPACE COMMUNICATIONS NETWORK)???18,75March 11, 2005
Interstellar Radio Message (IRM)CRAIGSLIST MESSAGES (DEEP SPACE COMMUNICATIONS NETWORK)???about 19(in 2005?)
Interstellar Radio Message (IRM)COSMIC CONNECTION (CNES AND ARTE)Cephei1approx. 2h 40m?17,17September 30, 2006
Interstellar Radio Message (IRM)ACROSS THE UNIVERSE (BEATLE SONGS)Ursae Minoris13m 48s15,83February 4, 2008
Interstellar Radio Message (IRM)MUSIK SKICKAS FRAN ESRANGECassiopeiae1?15,5June 4, 2008
Interstellar Radio Message (IRM)DORITOS ADVERTISEMENTUrsae Majoris16h15,5June 12, 2008
Interstellar Radio Message (IRM)A MESSAGE FROM EARTHLibrae14h 30m15,17October 9, 2008
Interstellar Radio Message (IRM)HELLO FROM EARTHLibrae1?14,33August 28, 2009
Interstellar Radio Message (IRM)FOREVERSENT???about 15(in 2009?)
Interstellar Radio Message (IRM)RUBISCO STARSArietis1approx. 15 min?14,08November 7, 2009
Interstellar Radio Message (IRM)RUBISCO STARSArietis1approx. 15 min?14,08November 7, 2009
Interstellar Radio Message (IRM)RUBISCO STARSCeti1approx. 15 min?14,08November 7, 2009
Interstellar Radio Message (IRM)THE EERIE SILENCE (PENGUIN BOOKS, NATIONAL SCIENCE & ENGINEERING WEEK UK)Orion Nebula1?13,75March 12, 2010
Interstellar Radio Message (IRM)WOW! REPLYGeminorum1?11,33August 15, 2012
Interstellar Radio Message (IRM)WOW! REPLYGeminorum1?11,33August 15, 2012
Interstellar Radio Message (IRM)WOW! REPLYCancri1?11,33August 15, 2012
Interstellar Radio Message (IRM)LONE SIGNALBoötis??10,42July 10, 2013
Interstellar Radio Message (IRM)JAXA SPACE CAMP (UDSC-1)Cancri1?10,25September 22, 2013
Interstellar Radio Message (IRM)JAXA SPACE CAMP (UDSC-2)Cancri1?9,33August 23, 2014
Interstellar Radio Message (IRM)A SIMPLE RESPONSE TO AN ELEMENTAL MESSAGE (ASREM)Ursae Minoris114m 26s7,17October 10, 2016
Interstellar Radio Message (IRM)SONAR CALLING GJ273bCanis Majoris15m 30s6,17October 16, 2017
Interstellar Radio Message (IRM)SONAR CALLING GJ273bCanis Majoris15m 30s6,17October 17, 2017
Interstellar Radio Message (IRM)SONAR CALLING GJ273bCanis Majoris15m 30s6,17October 18, 2017
Interstellar Radio Message (IRM)SONAR CALLING GJ273bCanis Majoris1?5,58May 14, 2018
Interstellar Radio Message (IRM)SONAR CALLING GJ273bCanis Majoris1?5,58May 15, 2018
Interstellar Radio Message (IRM)SONAR CALLING GJ273bCanis Majoris1?5,58May 16, 2018
Interstellar Radio Message (IRM)STEPHEN HAWKING MEMORIAL BROADCAST1A 0620-00 black hole16m 30s5,5June 15, 2018