PD Dr. Frank Postberg  Planetary Scientist
PD Dr. Frank Postberg is a planetary scientist, specialized in cosmic dust and outer solar system science. He is working at the Universities of Heidelberg (Cosmo-Chemistry Group) and Stuttgart (Cosmic Dust Research Group). He received Masters degrees in Chemistry and Physics and a holds a PhD in Astrophysics. Dr. Postberg received a Heisenberg Grant from the German Research Council (DFG) and leads a small research group at the Faculty of Chemistry and Geoscience at Heidelberg University. He is Co-Investigator of the Cosmic Dust Analyser (CDA) on the Cassini Spacecraft, Co-Investigator of the Surface Dust Analyser (SUDA) on NASA’s Europa Multiple Flyby Mission and member of the Interstellar Preliminary Examination (ISPE) for the Stardust sample return mission.
+++ ACTUALITIES +++  Scientific American Article (in October 2016 issue) “Under the Seas of Enceladus”  By Frank Postberg, Gabriel Tobie and Thorsten Dambeck >> Link to article ------------------------------------------------------------------------------------------------ Science Research Article Release (15th April 2016) “Flux and composition of interstellar dust at Saturn from Cassini’s Cosmic Dust Analyzer”  Altobelli, N.*, Postberg, F.*, Fliege, K.*, Trieloff, M.* et al. Science 352, Issue 6283, p. 312 - 318 *These authors contributed equally to this work. The paper describes the first ever in situ compositional measurement of contemporary interstellar dust (ISD). This was accomplished by the Cosmic Dust Analyser (CDA) onboard the Cassini space craft currently in orbit about Saturn. The composition of 36 individually analysed ISD particles is surprisingly similar with very small grain to grain variation and does not reflect the different dust populations initially injected into interstellar space by dying stars. This shows that these initially heterogenous dust populations are repeatedly destructed in the hot interstellar medium and by Super Nova shock waves and recondense from homogenized vapour phases in the cold medium. >> Link to article (Science) Download related press informations >> Link to Cassini-Huygens Mission, ESA >> Link to Cassini-Huygens Mission, NASA/JPL (will follow) >> University og Heidelberg (in german) >> Link to attending infographics ------------------------------------------------------------------------------------------------ “Spektrum der Wissenschaft” Cover story about Enceladus’ warm ocean in June 2015 issue  By Frank Postberg and Thorsten Dambeck >> Link to index ------------------------------------------------------------------------------------------------ NATURE ARTICLE RELEASE (12th MARCH 2015) “Ongoing hydrothermal activities within Enceladus” Hsiang-Wen Hsu*, Frank Postberg*, Yasuhito Sekine* et al. Nature 519, p. 207-210 (2015), doi:10.1038 *These authors contributed equally to this work. The results are the first clear indications that Saturn's icy moon Enceladus has active hydrothermal activity in its subsurface ocean. Seawater infiltrates and reacts with a rocky crust, emerging as a heated, mineral-laden solution. The reported finding of the first hydrothermal activity beyond Earth adds to the tantalizing possibility that Enceladus, which displays remarkable geologic activity, could be a habitable place in our solar system. >> Link to article (Nature)  >> Link to related News & Views article by Gabriel Tobie (Nature) Download related press information: >> Cassini-Huygens Mission, NASA/JPL >> Cassini-Huygens Mission, ESA >> Universities of Heidelberg & Stuttgart (Germany) Research Projects >> Some general words on planetary science with cosmic dust >> Exploring the Saturn’s rings and moons with Cassini >> Composition of interstellar dust crossing our solar system >> The Europa Multiple Flyby Mission >> Surface composition of Jupiter Trojan and main belt asteroids >> Laser-assisted water dispersion as analogue for hypervelocity ice particle impacts >> Development of dust detectors for future missions
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