VOLUME CONTENTS JANUARY/FEBRUARY Special Issue: EXOBIOLOGY (A) Planetology and the Origins of Life Bruston, P., Raulin, F. Planetology and the Origins of Life: From Space Exploration to Exobiology, and Related Interdisciplinary Programs 1 Rosenavist, J., Chassefiére, E. Inorganic chemistry of O, in a dense primitive atmosphere 3 Kasting, J. F. O, concentrations in dense primitive atmospheres: commentary 11 Dobrijevic, M., Parisot, J. P., A study of chemical systems using signal flow graph theory: Dutour, l. application to Neptune 15 Vanssay, E. de, Gazeau, M. C., Experimental simulation of Titan’s organic chemistry at low Guillemin, J. C., Raulin, F. temperature 25 Speller, C. V., Vacher, J. R., Mass spectrometric study of three-body ion—molecule clustering Duc, E., Fitaire, M. reactions of C,H3 ions with N, or CH, in N.-CH, mixtures 33 Ricard, A., Cernogora, G., Measurements in N,-CH,(C,H,) discharges of reaction rates and Fitaire, M., Hochard, L., thermochemical constants for Titan atmosphere study 41 Kouassi, N., Speller, C., Vacher, J. R. Cabane, M., Chassefiére, E. Laboratory simulations of Titan’s atmosphere: organic gases and aerosols 47 Edwards,S.A., _ Modelling the VUV emission spectrum of N,: preliminary results Tchang-Brillet, W.-U L., on the effects of rotational interactions on line intensities 67 Roncin, J.-Y., Launay, F., Rostas, F. Guillemin, J.-C., Lassalle, L., Germane photochemistry. Photolysis of gas mixtures of planetary Janati, T. interest 75 Bénilan, Y., Bruston, P., Absolute absorption coefficient of C,H, in the mid-UV range at low Raulin, F., Courtin, R., temperature; implications for the interpretation of Titan atmospheric Guillemin, J.-C. spectra 83 Chassefiére, E., Cabane, M. Two formation regions for Titan’s hazes: indirect clues and possible synthesis mechanisms 91 Rowe, B. R., Parent, D. C. Techniques for the study of reaction kinetics at low temperatures: application to the atmospheric chemistry of Titan 105 Prieur, D., Erauso, G., Hyperthermophilic life at deep-sea hydrothermal vents 115 Jeanthon, C. Hartman, H., McKay, C. P. Oxygenic photosynthesis and the oxidation state of Mars 123 Inglebert, R. L., Klossa, B., Proposed in situ secondary ion mass spectrometry on Mars 129 Lorin, J. C., Thomas, R. Ill IV Volume Contents Mautner, M. N., Leonard, R. L., Meteorite organics in planetary environments: hydrothermal Deamer, D. W. release, surface activity, and microbial utilization 139 (B) Life: Origin, Evolution and Adaptation to Extreme Environments Brack, A., Horneck, G. Life: Origin, Evolution and Adaptation to Extreme Environments, Wiesbaden, May 1993 151 Holm, N. G., Andersson, E. M. Abiotic synthesis of organic compounds under the conditions of submarine hydrothermal systems: a perspective 153 Schwartz, A. W. The RNA World and its origins 161 Forterre, P. Looking for the most “primitive” organism(s) on Earth today: the state of the art 167 Cabrol, N. A., Grin, E. A. A morphological view on potential niches for exobiology on Mars 179 Horneck, G. Exobiology, the study of the origin, evolution and distribution of life within the context of cosmic evolution: a review 189 Fast Track lp, W.-H. Time variations of the Jovian synchrotron radiation following the collisional impacts of comet Shoemaker-Levy 9—2. Flux K2UxS6 e ULmm rrrlc enhancement induced by neutral atmospheric turbulence 221 Grayzeck Jr, E. J., Generation of the IHW Comet Halley CD-ROM Archive 225 Klinglesmith Ill, D. A., Niedner Jr, M. B., A’Hearn, M. F. MARCH/APRIL Special Issue: SMALL BODIES IN THE SOLAR SYSTEM — ORIGIN, EVOLUTION, AND SIGNIFICANCE FOR THE FORMATION OF PLANETS Stoffler, D. Preface: Results of a Priority Programme of the Deutsche Forschungsgemeinschaft DFG (German Research Foundation) from 1987 to 1993 239 THEORY OF SOLAR SYSTEM FORMATION Riegger, J. M. Particle simulation of supersonic convection in the protostellar nebula 243 Dather, M. The luminosity of the collapsing presolar nebula 253 Sterzik, M. F., Herold, H., Local particle simulations of viscous self-gravitating disks 259 Ruder, H., Willerding, E. Volume Contents Stahl, B., Kiessling, M. K.-H., Phase transitions in gravitating systems and the formation of Schindler, K. condensed objects 271 Willerding, E. Evolutionary processes in the protoplanetary accretion disk 283 Osterbart, R., Willerding, E. Collective processes in planetary rings 289 ASTRONOMICAL OBSERVATIONS AND INTERPRETATIONS Fahr, H. J., Scherer, K., The evolution of the zodiacal dust cloud under plasma drag and Banaszkiewicz, M. Lorentz forces in the latitudinally asymmetric solar wind 301 Schertl, D., Grieger, F., High-resolution speckle masking observations of Ceres and Hofmann, K.-H., Mauder, W., Vesta 313 Reinheimer, T., Weghorn, H., Weigelt, G. Borngen, F. The Tautenburg minor planets (1987-1992) 321 COMETS AND COMET SIMULATION EXPERIMENTS Mohimann, D. Cometary activity and nucleus models 327 Kuhrt, E., Keller, H. U., interpretation of surface temperatures and activity of KOSI Lorenz, E. samples 333 Lorenz, E., Knollenberg, J., IR observations of KOSI samples 341 Kroker, H., Kuhrt, E. Benkhoff, J., Seidensticker, K. J., Energy analysis of porous water ice under space-simulated Seiferlin, K., Spohn, T. conditions: results from the KOSI-8 experiment 353 Lammerzahl, P., Gebhard, J., Gas release from ice/dust mixtures: results from eleven KOSI Grin, E., Klees, G. experiments 363 Thiel, K., Kolzer, G., Kochan, H., Phenomenology and dynamic behavior of the dust component Lammerzahl, P., Lorenz, E. in the KOSI experiments 375 Kolzer, G., Grin, E., Kochan, H., Dust particle emission dynamics from insolated ice/dust mixtures: Lammerzahl, P., Thiel, K. results from the KOSI 5 experiment 391 INTERPLANETARY DUST AND METEORITES Bohsung, J., Arndt, P., High resolution PIXE analyses of interplanetary dust particles Jessberger, E. K., Maetz, M., with the new Heidelberg proton microprobe 411 Traxel, K., Wallianos, A. Braun-Dullaeus, K.-U., Traxel, K. Copper, zinc, gallium and germanium distributions in taenite lamellae of iron meteorites and their importance for cooling rate estimations 429 Beckerling, W., Bischoff, A. Occurrence and composition of relict minerals in micrometeorites from Greenland and Antarctica — implications for their origins 435 Wulf, A. V., Palme, H., Fractionation of volatile elements in the early solar system: Jochum, K. P. evidence from heating experiments on primitive meteorites 451 Muller, W. F., Weinbruch, S., Transmission electron microscopy of chondrule minerals in the Walter, R., Muller-Beneke, G. Allende meteorite: constraints on the thermal and deformational history of granular olivine—pyroxene chondrules 469 Geiger, T., Bischoff, A. Formation of opaque minerals in CK chondrites 485 VI Volume Contents Metzler, K., Bobe, K. D., Thermal and impact metamorphism on the HED parent Palme, H., Spettel, B., Stoffler, D. asteroid 499 Kunz, J., Trieloff, M., Bobe, K. D., The collisional history of the HED parent body inferred from Metzler, K., Stoffler, D., “Ar—*Ar ages of eucrites 527 Jessberger, E. K. Herpers, U., Vogt, S., Bremer, K., Cosmogenic nuclides in differentiated Antarctic meteorites: Hofmann, H. J., Suter, M., measurements and model calculations 545 Wieler, R., Lange, H.-J., Michel, R. Michel, R., Lupke, M., Herpers, U., Simulation and modelling of the interaction of galactic protons Rosel, R., Suter, M., with stony meteoroids 557 Dittrich-Hannen, B., Kubik, P. W., Filges, D., Cloth, P. FAST TRACK Jorda, L., Rickman, H. Comet P/Wirtanen, summary of observational data 575 MAY The International Mars International strategy for the exploration of Mars 581 Exploration Working Group Mian, Z. U., Tozer, D. C. The present as history: an ensemble approach to terrestrial planet evolution 597 Jakowski, N., Forster, M. About the nature of the Night-time Winter Anomaly effect (NWA) in the F-region of the ionosphere 603 Chow, V. W., Rosenberg, M. Electrostatic ion cyclotron instability in dusty plasmas 613 Rosenberg, M., Krall, N. A. Modified two-stream instabilities in dusty space plasmas 619 Thompson, P., Dougherty, M. K., Wave behaviour near critical frequencies in cold bi-ion Southwood, D. J. plasmas 625 Melandsg@, F., Shukla, P. K. Theory of dust-acoustic shocks 635 De Angelis, G. Asteroid spin, pole and shape determinations 649 Dotto, E., Barucci, M. A., Ground-based Ida model: comparison with the first Galileo Fulchignoni, M. image 683 Fulchignoni, M., Barucci, M. A., A comparison of the G-mode and the three-parameter asteroid Tedesco, E. F. taxonomic classification techniques using a common data set 691 Letter Mills, A. A., Sims, M. R. pH of the Martian surface 695 Book Review Bonnet, R. M. Discovering the Secrets of the Sun by R. Kippenhahn 697 JUNE Special Issue: Asteroids, Comets and Meteors 1993—V Cosmovici, C. B., Schwarz, G., Imaging of H,O* in the coma of comet Halley 699 lp, W. H., Fink, U. Volume Contents Vil Bolatto, A. D., Fernandez, J. A., Asymmetric nongravitational forces on long-period comets 709 Carballo, G. F. Liou, J. C., Dermott, S. F., Xu, Y. L. The contribution of cometary dust to the zodiacal cloud 717 Wu, Z., Williams, I. P. P/Giacobini-Zinner and the Draconid meteor shower 723 Campins, H., Osip, D. J., Estimates of the radius and albedo of comet-asteroid transition Rieke, G. H., Rieke, M. J. object 4015 Wilson-Harrington based on infrared observations 733 Jorda, L., Hainaut, O., Photometric study of comets P/Faye 1991 XXI and Zanotta- Smette, A. Brewington 1992 Ill 737 Hajduk, A., Hajdukova, M., The Bologna—Modra forward-scatter radar experiment: reflection Gajdos, S., Kostecky, P., properties of meteor trains 747 Zigo, P., Cevolani, G., Grassi, G., Trivellone, G. Martinez Gonzalez, J. M., Orbit determination and errors of a star catalogue 751 Lopez Garcia, A., Gil, A. O., Chernetenko, J. McBride, N., Taylor, A. D., Asymmetries in the natural meteoroid population as sampled by Green, S. F., McDonnell, J. A. M. LDEF 757 Cevolani, G., Bortolotti, G., The Bologna-Lecce forward scatter radar experiment: preliminary Franceschi, C., Grassi, G., results 765 Trivellone, G., Hajduk, A., Kingsley, S. P. Gammelgaard, P. Variable phase factors and color indices during the rotation of 51 Nemausa and a comparison of six apparitions 773 Goidet-Devel, B., Renard, J. B., Polarization of asteroids. Synthetic curves and characteristic Levasseur-Regourd, A. C. parameters 779 Afonso, G. B., Gomes, R. S., Asteroid fragments in Earth-crossing orbits 787 Florczak, M. A. Hutton, R. G., Licandro, J., Pole coordinates of the asteroid 338 Budrosa: implication for the Gallardo, T. asteroidal family 124 797 Nakamura, T., Yoshikawa, M. Exponential growth of round-trip error and instability of orbits of small bodies in the outer solar system 801 Hestroffer, D., Morando, B. Observations of minor planets by Hipparcos 817 lvashkin, V. V., Smirnov, V. V. An analysis of some methods of asteroid hazard mitigation for the Earth 821 Mann, I., Grin, E. Dust particles beyond the asteroid belt—a study based on recent results of the Ulysses dust experiment 827 FAST TRACK Racca, G. D. Moon surface thermal characteristics for moon orbiting spacecraft thermal analysis 835 Book Review Di Pippo, S. Beyond this World by Nigel Calder 843 Vill Volume Contents JULY Lammer, H. Mass loss of N. molecules from Triton by magnetospheric plasma interaction 845 Leliwa-Kopystynski, J., Kinetics of compaction of granular ices HO, CO. and (NHs),(H2O):-. Kossacki, K. J. at pressures of 2-20 MPa and in temperatures of 100-270 K. Application to the physics of the icy satellites 851 Exertier, P., Bois, E. Analytical solution of the perturbed circular motion: an extended formulation for various perturbations 863 Russell, C. T., Mulligan, T., A simple test of the induced nature of the Martian tail 875 Delva, M., Zhang, T. L., Schwingenschuh, K. Leonovich, A. S., Mazur, V. A. Magnetospheric resonator for transverse-small-scale standing Alfven waves 881 Leonovich, A. S., Mazur, V. A. Linear transformation of the standing Alfven wave in an axisymmetric magnetosphere 885 Misconi, N. Y., Pettera, L. E. On the possibility of solar dust ring formation due to increased dust-ion drag from coronal mass ejections 895 Barkan, A., D'Angelo, N., Laboratory experiments on electrostatic ion cyclotron waves in a Merlino, R. L. dusty plasma 905 Dupeyrat, L., Sotin, C. The effect of the transformation of basalt to eclogite on the internal dynamics of Venus 909 Lin, J., Rijnbeek, R. P., Analysis of Petschek-type reconnection in a Y-type magnetic field Semenov, V. S., Kiendl, M. T., distribution 923 Biernat, H. K. Corrigendum 939 AUGUST Grun, E., Baguhl, M., Hamilton, D. P., Reduction of Galileo and Ulysses dust data 941 Kissel, J., Linkert, D., Linkert, G., Riemann, R. Grtn, E., Baguhl, M., Divine, N., Three years of Galileo dust data 953 Fechtig, H., Hamilton, D. P., Hanner, M. S., Kissel, J., Lindblad, B.-A., Linkert, D., Linkert, G., Mann, l., McDonnell, J. A. M., Morfill, G. E., Polanskey, C., Riemann, R., Schwehm, G., Siddique, N., Staubach, P., Zock, H. A. Grin, E., Baguhl, M., Divine, N., Two years of Ulysses dust data 971 Fechtig, H., Hamilton, D. P., Hanner, M. S., Kissel, J., Lindblad, B.-A., Linkert, D., Linkert, G., Mann, I., McDonnell, J. A. M., Morfill, G. E., Polanskey, C., Riemann, R., Schwehm, G., Siddique, N., Staubach, P., Zook, H. A. Volume Contents Raitala, J., Kauhanen, K., Crustal bending at Salme Dorsa on Venus’ 1001 Black, M., Tokkonen, T. De Angelis, G., Mottola, S. Lightcurves and pole determinations for the asteroids 69 Hesperia, 79 Eurynome and 852 Wiadilena 1013 Brunini, A. A possible constraint to Uranus’ great collision 1019 Harrison, |. K., Swinerd, G. G. Analysis of satellite laser ranging data to investigate satellite aerodynamics 1023 Chalov, S. V., Fahr, H. J. Entropy generation at the multi-fluid solar wind termination shock producing anomalous cosmic ray particles 1035 SEPTEMBER Wienbruch, U., Spohn, T. A self sustained magnetic field on lo? 1045 Engel, S., Lunine, J. l., Cratering on Titan and implications for Titan’s atmospheric Hartmann, W. K. history 1059 Liritzis, |., Petropoulos, B., Detailed spectral analysis of Jupiter’s Great Red Spot: relative Xanthakis, J.%, Banos, C., intensities for the period 1963-1967 1067 Sarris, E. Bharuthram, R., Rao, N. N. Self-similar expansion of a warm dusty plasma—!. Unmagnetized case 1079 Rao, N. N., Bharuthram, R. Self-similar expansion of a warm dusty plasma—ll. Magnetized case 1087 Sah, O. P. Small amplitude ion acoustic double layers in dusty plasmas 1095 Gomberoff, L., Hernandez, R., High energy tail formation due to right-hand polarized ion cyclotron Livi, S. waves 1101 Biernat, H. K., Bachmaier, G. A., Magnetosheath parameters and reconnection: a case study for the Kiendl, M. T., Erkaev, N. V., near-cusp region and the equatorial flank 1105 Mezentsev, A. V., Farrugia, C. J., Semenov, V. S., Rijnbeek, R. P. Oznovich, |., McEwen, D. J., Temperature and airglow brightness oscillations in the polar Sivjee, G. G. mesosphere and lower thermosphere 1121 OCTOBER/NOVEMBER Special Issue: DUST, MOLECULES AND BACKGROUNDS: FROM LABORATORY TO SPACE Guest Editors: E. Bussoletti, L. Colangeli and V. Mennella Dedication 1147 Bussoletti, E., Colangeli, L., Foreword 1149 Mennella, V. MOLECULES—DUST-ICE/LABORATORY Leach, S. Laboratory studies of polycyclic aromatic hydrocarbons, fullerenes and linear carbon chains in an astrophysical context 1153 X Volume Contents Salama, F., Joblin, C., Neutral and ionized PAHs: contribution to the interstellar extinction Allamandola, L. J. 1165 Wdowiak, T. J., Wei Lee, Cronin, J., Plasma processing of interstellar PAHs into solar system kerogen Beegle, L. W., Robinson, M. S. 1175 Ehrenfreund, P., Foing, B. H. Search for fullerenes and PAHs in the diffuse interstellar medium 1183 Joblin, C., Tielens, A. G. G. M., PAHs as the carriers of the 3.3 and 3.4 um emission bands 1189 Allamandola, L. J., Léger, A., d’Hendecourt, L., Geballe, T. R., Boissel, P. Krefowski, J., Sneden, C., Hiltgen, D. A survey of weak diffuse interstellar bands in selected ranges between 5600 and 7000 A 1195 Somerville, W. B. Observations of diffuse interstellar bands and of interstellar polarization 1205 Guillois, O., Nenner, I., Papoular, R., The coal model applied to the Red Rectangle and the Galactic IR Reynaud,C . emission 1211 Mennella, V., Colangeli, L., Laboratory experiments on cosmic dust analogues: the structure of Bussoletti, E., Merluzzi, P., small carbon grains 1217 Monaco, G., Palumbo, P., Rotundi, A. Sakata, A., Wada, S., Comparison of the absorption curves of soots, pitch samples and Tokunaga, A. T., Narisawa, T. QCCs to the interstellar extinction curve 1223 Buchta, C., D’Alessio, A., D’Anna, A., The optical characterization of high molecular mass carbonaceous Gambi, G., Minutolo, P., Russo, S. structures produced in premixed laminar flames across the soot threshold limit 1227 Patzer, A. B. C., Kohler, T. M., Primary astrophysical dust formation: laboratory desiderata 1233 Sedimayr, E. Stephens, J. R., Blanco, A., Effect of composition on IR spectra of synthetic amorphous silicate Bussoletti, E., Colangeli, L., cosmic dust analogues 1241 Fonti, S., Mennella, V., Orofino, V. Strazzulla, G., Castorina, A. C., lon irradiation of astrophysical ices 1247 Palumbo, M. E. Schutte, W. A., Gerakines, P. A. Recent results from the Leiden Observatory Laboratory: (a) band strengths in mixed ices; (b) UV photolysis of solid methanol 1253 Begemann, B., Henning, Th., Magnesium-iron oxides—astrophysical origin and optical constants Mutschke, H., Dorschner, J. 1257 Colangeli, L., Mennella, V., Extinction signatures of amorphous carbon grains from the vacuum Bussoletti, E., Merluzzi, P., UV to the far-IR 1263 Palumbo, P., Rotundi, A. Kaito, C., Nakamura, H., Growth of SiC grains by gas evaporation method and relationship Sakamoto, T., Kimura, S., Shiba, N., between optical properties and structure of SiC grains 1271 Yoshimura, Y., Nakayama, Y., Saito, Y., Koike, C. Moutou, C., Léger, A., Far-IR spectra of PAHs (14-75 um) 1283 d’Hendecourt, L. Volume Contents Papoular, R., Guillois, O., Nenner, I., On the nature of interstellar carbonaceous dust 1287 Perrin, J.-M., Reynaud, C., Sivan, J.-P. Robinson, M. S., Beegle, L. W., Spectroscopy of PAH species in the gas phase 1293 Wdowiak, T. J. Roush, T. L. Optical constants of amorphous carbon in the mid-IR (2.5-25 pm, 4000-400 cm") 1297 Saito, Y., Kaito, C., Sakamoto, T., Size control of carbon grains and their optical properties 1303 Kimura, S., Nakayama, Y., Koike, C. Westley, M. S., Baragiola, R. A., Ultraviolet photodesorption from water ice 1311 Johnson, R. E., Baratta, G. A. MOLECULES-DUST-ICE/THEORY AND OBSERVATIONS Cecchi-Pestellini, C., Cervetto, C., The regulatory role of Rf, in the photochemistry of dark clouds 1319 Aiello, S., Barsella, B. Gerakines, P. A., Whittet, D. C. B. A review of interstellar polarization properties and recent measurements toward the Chamaeleon | and Taurus dark clouds 1325 Zavagno, A., Baluteau, J. P. Mid-IR continuum in NGC 7027: evidence for the presence of hot amorphous carbon grains 1329 Henning, Th., Michel, B., Dust opacities in dense regions 1333 Stognienko, R. Smoot, G. F. Long wavelength observations of high galactic latitude dust 1345 Clark, F. O., Shipman, R. F., Destruction of small IR continuum emitters 1353 Assendorp, R., Kester, D., Egan, M. P. Pendleton, Y. J. Laboratory comparisons of organic materials to interstellar dust and the Murchison meteorite 1359 Matthews, C. N. Hydrogen cyanide polymers: from laboratory to space 1365 Allam, S., Assendorp, R., Longo, G., The far-IR emission from compact groups of galaxies 1371 Richter, G. Arnaboldi, M., Freeman, K. C., Dust and infrared imaging of polar ring galaxies 1377 Sackett, P. D., Sparke, L. S., Capaccioli, M. Dall’Oglio, G., Morgante, G., Interstellar dust spectral index: a balloon-borne experiment 1389 Pizzo, L., Valenziano, L., Merluzzi, P. Davidson, W. C., MacQueen, R. M., Scattering models for the solar infrared F-corona brightness 1395 Mann, l. Masi, S., Aquilini, E., Boscaleri, A., Far infrared multi-frequency observation of interstellar dust clouds Bernardis, P. de, De Petris, M., 1401 Gervasi, M., Martinis, L., Natale, V., Palumbo, P., Scaramuzzi, F. XII Volume Contents Piotto, G., Capaccioli, M., Reddening free distance determination via Cepheid variables 1405 Musella, |., D'Onofrio, M. Ponomarjov, M. G., Gunko, Yu. F. Kinetic modeling of charged particle cloud expansion and emission in magnetic and electric fields 1409 Ponomariov, M. G. Disturbances of the ambient magnetoplasma due to its interactions with object surfaces. Imaginary emission method. Far-wake of objects moving through a rarefied plasma at different angles to the ambient magnetic field 1419 Wdowiak, T. J., Beegle, L. W., DIBs in captivity (?) 1429 Robinson, M. S., Wei Lee BACKGROUNDS, SPACE AND SOLAR SYSTEM De Zotti, G., Franceschini, A., The extragalactic infrared background 1439 Mazzei, P., Toffolatti, L., Danese, L. Smoot, G. F. Large angular scale anisotropy of the CBR: COBE DMR observations 1449 Mandolesi, N., Bersanelli, M., COBRAS/SAMBA: the ESA Medium Size Mission for measurements Cesarsky, C., Danese, L., of CBR anisotropy 1459 Efstathiou, G., Griffin, M., Lamarre, J. M., Norgaard-Nielsen, H. U., Pace, O., Puget, J. L., Raisanen, A., Smoot, G. F., Tauber, J., Volonte, S. Bersanelli, M., Bensadoun, M., Measurements of the atmospheric emission and variations in the Danese, L., De Amici, G., 1-90 GHz range 1467 Kogut, A., Levin, S., Limon, M., Maino, D., Smoot, G. F., Witebsky, C. Fulle, M., Ortiz Gil, A., Pasian, F. HST observation of the inner coma of 2060 Chiron 1473 Jurewicz, A., Orofino, V., Blanco, A., Radiation transfer modelling of the dust torus of Phobos in view of Fonti,S . the Mars 94/96 mission 1479 DECEMBER Encrenaz, Th., Bézard, B., Detectability of molecular species in planetary and satellite Crovisier, J., Coustenis, A., atmospheres from their rotational transitions 1485 Lellouch, E., Gulkis, S., Atreya, S. K. Podolak, M., Weizman, A., Comparative models of Uranus and Neptune 1517 Marley, M. Basilevsky, A. T., Head, J. W. Regional and global stratigraphy of Venus: a preliminary assessment and implications for the geological history of Venus 1523 Grosfils, E. B., Head III, J. W. Radiating dike swarms on Venus: evidence for emplacement at zones of neutral buoyancy 1555 Schultz, R. A. Gradients in extension and strain at Valles Marineris, Mars 1561