Abstract Despite the fact that major efforts have been expended on passive searches for extraterrestrial signals, few deliberate “transmissions” to potential alien recipients have occurred. These have generally taken the form of simple graphics depicting such things as our appearance, location, and biological construction. In this paper, we consider (a) the fundamental technical and astronomical limitations to interstellar messaging—in other words, how many “bits” could any society reasonably send, and (b) what might be a likely transmission strategy. These considerations suggest approaches for SETI programs, as well as giving insight into the types of messages we might construct for eventual replies to received signals.
Limits on interstellar messages
Acta Astronautica ; 68 , 3-4 ; 366-371
2009-10-19
6 pages
Article (Journal)
Electronic Resource
English
Seti , Active seti , Transmissions , Messages
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