Restricted accessMoreSectionsView PDF ToolsAdd to favoritesDownload CitationsTrack Citations ShareShare onFacebookTwitterLinked InRedditEmail Cite this article Peebles P. J. E. 1999Issues for the next generation of galaxy surveysPhil. Trans. R. Soc. A.35721–34http://doi.org/10.1098/rsta.1999.0312SectionRestricted accessIssues for the next generation of galaxy surveys P. J. E. Peebles P. J. E. Peebles Joseph Henry Laboratories, Princeton University, Princeton, NJ 08540, USA Google Scholar Find this author on PubMed Search for more papers by this author P. J. E. Peebles P. J. E. Peebles Joseph Henry Laboratories, Princeton University, Princeton, NJ 08540, USA Google Scholar Find this author on PubMed Search for more papers by this author Published:15 January 1999https://doi.org/10.1098/rsta.1999.0312AbstractThe weight of the evidence is that the mean mass density (excluding a cosmological constant or its equivalent) is less than the critical Einstein–de Sitter value. This result, if confirmed, is notable because so many of us believed the Einstein–de Sitter model is the elegant and sensible choice. It may offer a cautionary lesson: perhaps our search for a theory of structure formation should broaden the range of models under discussion, in case our first guesses disagree with Nature's choice. To that end I describe an isocurvature model that offers a viable and arguably attractive picture for the early assembly of galaxies that trace mass. Surveys in progress will be capable of distinguishing between this model and the commonly studied adiabatic cold dark matter theory, and may convincingly establish the nature of the initial conditions out of which the galaxies grew. Previous ArticleNext Article VIEW FULL TEXT DOWNLOAD PDF FiguresRelatedReferencesDetailsCited by Phillipps S, Driver S, Couch W, Fernandez-Soto A, Bristow P, Odewahn S, Windhorst R and Lanzetta K (2002) Morphological number counts and redshift distributions to I = 25 from the Hubble Deep Fields: constraints on cosmological models from early-type galaxies, Monthly Notices of the Royal Astronomical Society, 10.1046/j.1365-8711.2000.03872.x, 319:3, (807-812) Peebles P and Vilenkin A (1999) Noninteracting dark matter, Physical Review D, 10.1103/PhysRevD.60.103506, 60:10 Hamber H (2019) Gravitational Fluctuations as an Alternative to Inflation, Universe, 10.3390/universe5010031, 5:1, (31) Hamber H, Yu L and Kankanamge H (2020) Gravitational Fluctuations as an Alternative to Inflation III. Numerical Results, Universe, 10.3390/universe6070092, 6:7, (92) Hamber H and Yu L (2019) Gravitational Fluctuations as an Alternative to Inflation II. CMB Angular Power Spectrum, Universe, 10.3390/universe5110216, 5:11, (216) This Issue15 January 1999Volume 357Issue 1750Discussion Meeting Issue ‘Large–scale structure in the Universe’ organized by G. P. Efstathiou, R. S. Ellis, J. E. Gunn and D. York Article InformationDOI:https://doi.org/10.1098/rsta.1999.0312Published by:Royal SocietyPrint ISSN:1364-503XOnline ISSN:1471-2962History: Published online15/01/1999Published in print15/01/1999 License: Citations and impact Keywordsgalaxy formationcosmological teststhermal background radiationbiasing