VATICAN OBSERVATORYSTOEGER, W. R., HELLER, M., and ZYCINSKI, J. eds. Philosophy in Science, Vol.10 (Tucson, AZ: Pachart Publishing House, <strong>2003</strong>), 288 pp.STRAIT, M. M. and CONSOLMAGNO, G. J. “Porosity of Basaltic Materials: Terrestrialand Meteoritic Samples,” Meteorit. Planet. Sci., 38, A106STRAIZYS, V., KAZLAUSKAS, A., CERNIAUSKAS, A., BOYLE, R.P., VRBA, F.J., PHILIP, A.G. DAVIS, LAUGALYS, V., CERNIS, K., and SMRIGLIO, F.“Overlapping Open Clusters NGC 1750 and NGC 1758 behind the Taurus Dark Clouds.II. CCD Photometry in the Vilnius System,” <strong>2003</strong>, Baltic Astronomy, 12, 323TEGLER, S. C., ROMANISHIN, W., and CONSOLMAGNO, G. J. “Correlation ofKuiper Belt Object Colors With Orbital Properties: Gray Objects in Hot Orbits,” BAAS,Abstract, 49-06. “Color Patterns in the Kuiper Belt: A Possible Primordial Origin,” 2004, ApJLett, 599:L49-L52, <strong>2003</strong> DecemberTERES, G., S. J. “Die Vatikanische Sternwarte. Geschicte und Forschungsarbeit,”<strong>2003</strong>, Stimmen der Zeit 5, 291-300UGLESICH, R., CROTTS, A.P.S., BALTZ, E., DE JONG, J., TOMANEY, A.,BOYLE, R., CORBALLY, C., and GOULD, A. “Evidence for Halo Microlensing inM31,” (abstract) 2002, BAAS, 34, 1277UGLESICH, R.R., CROTTS, A.P.S., BALTZ, E.A., DE JONG, J, BOYLE, R.P., andCORBALLY, C.J. “Evidence of Halo Microlensing in M31,” Ap.J. (submitted)V. <strong>Observatory</strong> VisitorsThe <strong>Vatican</strong> <strong>Observatory</strong> at Castel Gandolfo and the <strong>Vatican</strong> <strong>Observatory</strong> ResearchGroup in Tucson, Arizona, hosted a number of visitors during the year. Noteworthywere the number of school groups and cultural groups received by MAFFEO, assistedby KOCH, at Castel Gandolfo. We were especially happy to receive members of thePontifical Academy of Sciences and officials of the <strong>Vatican</strong> Congregation for Religious.The close approach of Mars to Earth in late August and early September brought manyvisitors to the <strong>Observatory</strong>, among them Mrs. Kathryn Colvin, Ambassador from theUnited Kingdom to the Holy See.The following individuals paid working visits to the <strong>Observatory</strong>:MARCELO ARAÚJO, Universidade Federal do Rio de Janeiro, Brazil46
KAZIMIERAS CERNIS, Institute of Theoretical Physics and Astronomy, Vilnius University,Vilnius, LithuaniaGABRIELE GIONTI, S.J., Institute for the Study of Philosophy, Antonianum, Padua,ItalyJOHN HEARNSHAW, University of Canterbury, Christchurch, New ZealandROBERT JANUSZ, S.J., University School Ignatianum, Kraców, PolandALGIRDAS KAZLAUSKAS, Institute of Theoretical Physics and Astronomy,VilniusUniversity, Vilnius, LithuaniaWITOLD MACIEJEWSKI, Astronomical <strong>Observatory</strong>, Jagiellonian University,Kraków, Poland and the Arcetri <strong>Observatory</strong>, Florence, ItalyAILEEN O'DONOGHUE, St. Lawrence University, Canton, New York, USAA. G. DAVIS PHILIP, Union College and Institute for Space Observations,Schenectady, New York, USAALISON ROSE, Inigo Films, Toronto, CanadaSARA RUSSELL, Natural History Museum, London, UKFILIPPO SMRIGLIO, Department of Physics, University of Rome La Sapienza, Rome,ItalyJULIUS SPERAUSKAS, Astronomical <strong>Observatory</strong> of Vilnius University, Vilnius,LithuaniaFRANK YOUNGER, Hertzberg Institute for Astrophysics, Victoria, BC, CanadaAmong other professional guests at either Castel Gandolfo or Tucson during the yearwere:ANGEL ABBUD-MADRID, Colorado School of Mines, Colorado, USA; DANIEL M.DAVIS, SUNY Stony Brook, New York, USA; WILLIAM MERLINE, Southwest ResearchInstitute, Boulder, Colorado, USA; ROBERT PAPPALARDO, University ofColorado, Boulder, Colorado, USA47ANNUAL REPORT <strong>2003</strong>