On the likelihood of non-terrestrial artifacts in the Solar System |
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| Institution: | 1. Blue Marble Space Institute of Science, PO Box 85561, Seattle, WA 98145, USA;2. Rock Ethics Institute, Pennsylvania State University, 201 Willard Building, University Park, PA 16802, USA;3. Department of Geosciences, Pennsylvania State University, 443 Deike Building, University Park, PA 16802, USA;1. Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Královopolská 135, CZ-612 65 Brno, Czech Republic;2. Department of Biochemistry, Faculty of Science, Masaryk University, Kotlá?ská 2, 61137 Brno, Czech Republic;3. CEITEC–Central European Institute of Technology, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic;4. Rimstone Laboratory, RLI, 3618 Promontory Pl, Carlsbad, CA 92010, USA;1. INFN, Sezione di Roma, Piazzale A. Moro 2, I-00185 Roma, Italy;2. INFN, Sezione di Roma Tre, Via della Vasca Navale 84, I-00146 Roma, Italy;3. Dipartimento di Fisica, Università di Roma “La Sapienza”, Piazzale A. Moro 2, I-00185 Roma, Italy;4. SISSA, Via Bonomea 265, I-34136 Trieste, Italy;5. California Institute of Technology, Pasadena, CA, USA;6. Physics Department, Florida State University, Tallahassee, FL 32306-4350, USA;1. Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry, 19 Claremont Crescent, Sheffield, UK;2. Sheffield Diagnostic Genetics Service, Sheffield Children''s Hospital NHS Foundation Trust, Western Bank, Sheffield, UK;3. Department of Oral and Maxillofacial Surgery, Charles Clifford Dental Hospital, Wellesley Road, Sheffield, UK;4. Department of Histopathology, Royal Hallamshire Hospital, Glossop Road, Sheffield, UK;1. Department of Earth Sciences, University College London, Gower Place, London WC1E 6BS, UK;2. Department of Earth Science and Engineering, Royal School of Mines, Imperial College London, London, SW7 2BP, UK;3. Institute of Geochemistry and Petrology, Department of Earth Sciences, ETH Zürich, Clausiusstrasse 25, 8092 Zürich, Switzerland;4. Bigelow Laboratory for Ocean Sciences, 60 Bigelow Drive, P.O. Box 380, East Boothbay, ME 04544, USA;5. Core Research Laboratories, The Natural History Museum, Cromwell Road, London SW7 5BD, UK;6. Federal Institute for Geosciences and Natural Resources (BGR), Stilleweg 2, D-30655 Hannover, Germany |
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| Abstract: | Extraterrestrial technology may exist in the Solar System without our knowledge. This is because the vastness of space, combined with our limited searches to date, implies that any remote unpiloted exploratory probes of extraterrestrial origin would likely remain unnoticed. Here we develop a probabilistic approach to quantify our certainty (or uncertainty) of the existence of such technology in the Solar System. We discuss some possible strategies for improving this uncertainty that include analysis of moon- and Mars-orbiting satellite data as well as continued exploration of the Solar System. |
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