Inscribed matter as an energy-efficient means of communication with an extraterrestrial civilization

Details Inscribed matter as an energy-efficient means of communication with an extraterrestrial civilization Inscribed matter as an energy-efficient means of communication with an extraterrestrial civilization

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004natur.431...47r&link_type=abstract

Nature, Volume 431, Issue 7004, pp. 47-49 (2004).

Physics

6

Scientific paper

It is well known that electromagnetic radiation-radio waves-can in principle be used to communicate over interstellar distances. By contrast, sending physical artefacts has seemed extravagantly wasteful of energy, and imagining human travel between the stars even more so. The key consideration in earlier work, however, was the perceived need for haste. If extraterrestrial civilizations existed within a few tens of light years, radio could be used for two-way communication on timescales comparable to human lifetimes (or at least the longevities of human institutions). Here we show that if haste is unimportant, sending messages inscribed on some material can be strikingly more energy efficient than communicating by electromagnetic waves. Because messages require protection from cosmic radiation and small messages could be difficult to find among the material clutter near a recipient, `inscribed matter' is most effective for long archival messages (as opposed to potentially short ``we exist'' announcements). The results suggest that our initial contact with extraterrestrial civilizations may be more likely to occur through physical artefacts-essentially messages in a bottle-than via electromagnetic communication.

Affiliated with

Also associated with

No associations

Rating

Inscribed matter as an energy-efficient means of communication with an extraterrestrial civilization does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Inscribed matter as an energy-efficient means of communication with an extraterrestrial civilization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inscribed matter as an energy-efficient means of communication with an extraterrestrial civilization will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-801784