Abstract
Owen1 has reviewed the potential for detecting life on Earth-like planets of nearby stars, from atmospheric spectra. The presence of oxygen, as revealed, for example, by the 7,600-Å absorption band, would be of particular significance. But even the direct detection of a Jupiter-like planet around the nearest star is a formidable task, perhaps just possible with the Hubble Space Telescope2,3 or with a Michelson interferometer operating at 40-µ wavelength4. Earth-like planets, being fainter and closer in, are still more difficult. Here we show that a space telescope of 16 m diameter, apodized in a new way, could image and measure oxygen in the thermal infrared spectra of earthlike planets up to 4 pc away. Several interesting candidate stars lie within this distance.
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References
Owen, T. Strategies for the Search for Life in the Universe (ed. Papagiannis, M. D.) 177–185 (Reidel, Dordrecht, 1980).
Davies, D. W. Icarus 42, 145–148 (1980).
Breckinridge, J. B., Kuper, T. G. & Shack, R. V. Opt. Enginng 23, 816–820 (1984).
Bracewell, R. N. & MacPhie, R. H. Icarus 38, 136–147 (1979).
Burke, B. F. Detection of Life in Other Planetary Systems, Nature (in press).
Rose, H. et al. The Handbook of Albedo and Thermal Earthshine (Environmental Research Institute of Michigan, Ann Arbor, Rep. No. 190201-I-T, 1973).
Ruze, J. Proc. IEEE 54, 633–640 (1966).
Elson, J. M., Bennett, H. E. & Bennett, J. M. Applied Optics and Optical Engineering Vol. 7 (eds Shannon, R. R. & Wyant, J. C.) pp. 191–244 (Academic Press, New York, 1979).
Bahcall, J. N. & Spitzer, L. Scient. Am. 247, 40–51 (1982).
Mason, P. V. & Mount, K. JPL Memo (10 Feburary 1984).
Angel, J. R. P. Proc. South-west Conference on Optics (eds McDowell, R. S. & Gerada, J. B.) Proceedings of the SPIE, 542, 32 (1986).
Alien, C.W. Astrophysical Quantities (Clowes, London, 1973).
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Angel, J., Cheng, A. & Woolf, N. A space telescope for infrared spectroscopy of Earth-like planets. Nature 322, 341–343 (1986). https://doi.org/10.1038/322341a0
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DOI: https://doi.org/10.1038/322341a0
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