Markiewicz, W. J.; Skorov, Y.; Keller, H. U.: The shape of a sublimating ice surface at the bottom of a non-volatie cylinder: Monte Carlo simulations and 2-D analysis. Advances in Space Research 21, pp. 1599 - 1602 (1998)
Markiewicz, W. J.; Skorov, Y. V.; Keller, H. U.; Kömle, N. I.: Evolution of ice surfaces within porous near-surface layers on cometary nuclei. Planetary and Space Science 46, pp. 357 - 366 (1998)
Crovisier, J.; Leech, K.; Bockelée-Morvan, D.; Brooke, T. Y.; Hanner, M. S.; Altieri, B.; Keller, H. U.; Lellouch, E.: The spectrum of Comet Hale-Bopp (C/1995 O1) observed with the Infrared Space Observatory at 2.9 Astronomical Units from the Sun. Science 275, pp. 1904 - 1909 (1997)
Eggers, S.; Keller, H. U.; Kroupa, P.; Markiewicz, W. J.: Origin and dynamics of comets and star formation. Planetary and Space Science 45, pp. 1099 - 1104 (1997)
Smith, P. H.; Tomasko, M. G.; Britt, D.; Crowe, D.; Reid, R.; Keller, H. U.; Thomas, N.; Gliem, F.; Rueffer, P.; Sullivan, R.et al.; Greeley, R.; Knudsen, J. M.; Madsen, B. M.; Gunnlaugsson, H. P.; Hviid, S.; Goetz, W.; Soderblom, L.; Gaddis, L.; Kirk, R.: The Imager for Mars Pathfinder experiment. Journal Geophysical Research 102, pp. 4003 - 4025 (1997)
Thomas, N.; Keller, H. U.; Markiewicz, W. J.; Smith, P. H.: Observations of Martian aerosols with the Imager for Mars Pathfinder. Advances in Space Research 19, pp. 1271 - 1276 (1997)
Wuttke, M. W.; Keller, H. U.; Markiewicz, W. J.; Petrova, E.; Richter, K.; Thomas, N.: Properties of the Mars atmosphere: A revised analysis of Phobos/KRFM data. Planetary and Space Science 45, pp. 281 - 288 (1997)
Crovisier, J.; Brooke, T. Y.; Hanner, M. S.; Keller, H. U.; Lamy, P. L.; Altieri, B.; Bockelée-Morvan, D.; Jorda, L.; Leech, K.; Lellouch, E.: The infrared spectrum of comet C/1995 O1 (Hale-Bopp) at 4.6 AU from the Sun. Astronomy and Astrophysics 315, pp. L385 - L388 (1996)
Knollenberg, J.; Kührt, E.; Keller, H. U.: Interpretation of HMC images by a combined thermal and gasdynamic model. Earth, Moon and Planets 72, pp. 103 - 112 (1996)
Lamy, P. L.; Toth, I.; Grün, E.; Keller, H. U.; Sekanina, Z.; West, R. M.: Observations of comet P/Faye 1991 XXI with the Planetary Camera of the Hubble Space Telescope. Icarus 119, pp. 370 - 384 (1996)
Petrova, E.; Keller, H. U.; Markiewicz, W. J.; Thomas, N.; Wuttke, M. W.: Ice, hazes, and clouds in the Martian atmosphere as derived from the PHOBOS/KRFM data. Planetary and Space Science 44, pp. 1163 - 1176 (1996)
Kührt, E.; Keller, H. U.; Lorenz, E.: Interpretation of surface temperatures and activity of KOSI samples. Planetary and Space Science 43, pp. 333 - 340 (1995)
Various application review phases in 2025. PhD projects in cosmochemistry, planetary science, solar and stellar physics, helioseismology, asteroseismology, ...
The dwarf planet is a bizarre, cryovolcanic world. However, the organic deposits discovered on its surface so far are unlikely to originate from its interior.
The Uranian magnetic field is more expansive than previously thought, according to newly analyzed data from Voyager 2, making it easier to search for moons with oceans.