The Surface Age of Sputnik Planum, Pluto, Must Be Less than 10 Million Years
نویسندگان
چکیده
منابع مشابه
The Surface Age of Sputnik Planum, Pluto, Must Be Less than 10 Million Years
Data from the New Horizons mission to Pluto show no craters on Sputnik Planum down to the detection limit (2 km for low resolution data, 625 m for high resolution data). The number of small Kuiper Belt Objects that should be impacting Pluto is known to some degree from various astronomical surveys. We combine these geological and telescopic observations to make an order of magnitude estimate th...
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Bierson, D.P. Hamilton, J. M. Moore, W. B. McKinnon, S. A. Stern, L. A. Young, H. A. Weaver, C. B. Olkin, K. Ennico, and the New Horizons GGI Team, Dept. Earth and Planetary Sciences, University of California Santa Cruz, Santa Cruz, CA 95064, USA ([email protected]), Dept. Astronomy, Univ. Maryland, College Park MD 20742, NASA Ames Research Center, Moffett Field, CA 94035. Dept. Earth and Plan...
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BACKGROUND An overall increase in the incidence of paediatric cholelithiasis forms the basis of this study, which aims to investigate the overall changing clinical pattern of cholelithiasis. METHODS This is a retrospective observational descriptive study including twenty three (23) patients with gallstones admitted and operated during June 2006-June 2008 in surgical department of a teaching h...
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PURPOSE To determine the amount and time course of binocular visual acuity improvement during treatment of bilateral refractive amblyopia in children three to less than 10 years of age. DESIGN Prospective, multicenter, noncomparative intervention. METHODS One hundred and thirteen children (mean age, 5.1 years) with previously untreated bilateral refractive amblyopia were enrolled at 27 comm...
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Summary Aim : The purpose of this study is to determine the prevalence of amblyopia in 1310 children less than 10 years old at south east province of Tehran in 1994. Method : Diagnosis of amblyopia is based on linear snellen best corrected vision of 8/10 or less and or difference of 2 lines between eyes in children over 3 years old and behavioral difference when one eye is covered as compared...
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ژورنال
عنوان ژورنال: PLOS ONE
سال: 2016
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0147386