Optimal wavelength region for communication with extraterrestrial intelligence: λ = 1.5 mm

Abstract

This article shows that the best capability and reliability of communication at astronomical distances can be achieved at millimetre wavelengths. The cost of communication, and the number of directions in which signals are sent and searched for are assumed to be fixed. A characteristic frequency might be 203.385 GHz, corresponding to the splitting of the ground state of the lightest atom—positronium—and coinciding with the centroid of the relic background spectrum.

Access options

Rent or Buy article

Get time limited or full article access on ReadCube.

from$8.99

All prices are NET prices.

References

  1. 1

    Cocconi, G. & Morrison, P. Nature 184, 844–846 (1959).

    ADS  Article  Google Scholar 

  2. 2

    Oliver, B. M. The search for Extraterrestrial Intelligence (eds Morrison, P., Billingham, J. & Wolf, J.) 64–74 (NASA-SP-419, 1977).

    Google Scholar 

  3. 3

    Kardashev, N. S. in Extraterrestrial Civilizations. Problems of Interstellar Communication., (ed. Kaplan, S. A.) NASA TTF-63, 44–48 (1971).

    Google Scholar 

  4. 4

    Drake, F. D. & Helou, G., National Astronomy and Ionospheric Center. NAIC 76 (1977).

    Google Scholar 

  5. 5

    Lebedev, D. S. & Levitin, L. B. Information Propagation 9, 1–22 (1966).

    Google Scholar 

  6. 6

    Longair, M. C. & Synaev, R. A. Usp. Fiz. Nauk (USSR) 105, 41–96 (1971).

    ADS  CAS  Article  Google Scholar 

  7. 7

    Low, F. J. Astrophys. J. Lett. 214, L115–L118 (1977).

    ADS  CAS  Article  Google Scholar 

  8. 8

    Backer, D. C. Astr. Astrophys. 43, 395–404 (1975).

    ADS  Google Scholar 

  9. 9

    Rickett, B. J. A. Rev. Astr. Astrophys. 15, 479–504 (1977).

    ADS  Article  Google Scholar 

  10. 10

    Oliver, J. B. & Billingham, J. Project Cyclops, NASA/Ames. Res. Centre, 51–58 (1973).

  11. 11

    Braginsky, V. B. & Vyatchenyn, S. P. Zh. éksp. teor. Fiz. (USSR) 74, 828–832 (1978).

    ADS  Google Scholar 

  12. 12

    Woody, D. P. et al. Phys. Rev. Lett. 34, 1036–1039 (1975).

    ADS  CAS  Article  Google Scholar 

  13. 13

    Egan, P. O. et al. Phys. Rev. A 15, 251–260 (1977).

    CAS  Article  Google Scholar 

  14. 14

    Phillips, T. G. et al. Astrophys. J. Lett. 222, L 59–62 (1978).

    ADS  Article  Google Scholar 

Download references

Author information

Affiliations

Authors

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Kardashev, N. Optimal wavelength region for communication with extraterrestrial intelligence: λ = 1.5 mm. Nature 278, 28–30 (1979). https://doi.org/10.1038/278028a0

Download citation

Further reading

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.