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dc.contributor.authorMazarico, Erwan
dc.contributor.authorNeumann, Gregory A.
dc.contributor.authorSun, Xiaoli
dc.contributor.authorTorrence, Mark H.
dc.contributor.authorMao, Dan-dan
dc.contributor.authorSmith, David E.
dc.contributor.authorZuber, Maria
dc.contributor.authorGenova, Antonio
dc.date.accessioned2018-10-30T18:21:10Z
dc.date.available2018-10-30T18:21:10Z
dc.date.issued2018-02
dc.date.submitted2017-12
dc.identifier.issn0032-0633
dc.identifier.urihttp://hdl.handle.net/1721.1/118808
dc.description.abstractThe scale of the solar system is slowly changing, likely increasing as a result of solar mass loss, with additional change possible if there is a secular variation of the gravitational constant, G. The measurement of the change of scale could provide insight into the past and the future of the solar system, and in addition a better understanding of planetary motion and fundamental physics. Estimates for the expansion of the scale of the solar system are of order 1.5 cm year[superscript −1]AU[superscript −1], which over several years is an observable quantity with present-day laser ranging systems. This estimate suggests that laser measurements between planets could provide an accurate estimate of the solar system expansion rate. We examine distance measurements between three bodies in the inner solar system – Earth's Moon, Mars and Venus – and outline a mission concept for making the measurements. The concept involves placing spacecraft that carry laser ranging transponders in orbit around each body and measuring the distances between the three spacecraft over a period of several years. The analysis of these range measurements would allow the co-estimation of the spacecraft orbit, planetary ephemerides, other geophysical parameters related to the constitution and dynamics of the central bodies, and key geodetic parameters related to the solar system expansion, the Sun, and theoretical physics.en_US
dc.publisherElsevier BVen_US
dc.relation.isversionofhttp://dx.doi.org/10.1016/J.PSS.2018.02.003en_US
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivs Licenseen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en_US
dc.sourceElsevieren_US
dc.titleTrilogy, a planetary geodesy mission concept for measuring the expansion of the solar systemen_US
dc.typeArticleen_US
dc.identifier.citationSmith, David E., et al. “Trilogy, a Planetary Geodesy Mission Concept for Measuring the Expansion of the Solar System.” Planetary and Space Science, vol. 153, Apr. 2018, pp. 127–33. © 2018 The Authorsen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciencesen_US
dc.contributor.mitauthorSmith, David E.
dc.contributor.mitauthorZuber, Maria
dc.contributor.mitauthorGenova, Antonio
dc.relation.journalPlanetary and Space Scienceen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2018-10-05T12:58:00Z
dspace.orderedauthorsSmith, David E.; Zuber, Maria T.; Mazarico, Erwan; Genova, Antonio; Neumann, Gregory A.; Sun, Xiaoli; Torrence, Mark H.; Mao, Dan-danen_US
dspace.embargo.termsNen_US
dc.identifier.orcidhttps://orcid.org/0000-0003-2652-8017
dc.identifier.orcidhttps://orcid.org/0000-0001-5584-492X
mit.licensePUBLISHER_CCen_US


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