Research Interests:

Planetary science, small bodies - comets & asteroids, surface morphology, cometary activity, origin and Solar System formation, planetary defense, energetic particles and propagation.


Since 2009: Rosetta/OSIRIS Principal Investigator
1997 – 2008: Rosetta/OSIRIS Project Manager
2009 – 2011: Dawn/FC Principal Investigator
2003 – 2008: Dawn/FC Project Manager
Since 2003: Dawn Mission Co-Investigator
Since 1997: Senior Scientist, Max Planck Institute for Solar System Research
1988 – 1997: Research Scientist, University of Kiel, Germany


1997: Ph.D. in Physics, Energetic Particles in the Solar System, University of Kiel, Germany

Honors and Awards:

ESA Awards for contribution to the Ulysses, SOHO, and Rosetta mission.
NASA Group Achievement Awards to mission Ulysses and DAWN.

Selected Publications:

(1) Davidsson, B. J. R., Sierks, H., et al (2016). The primordial nucleus of comet 67P/Churyumov-Gerasimenko. Astronomy and Astrophysics, 592:A63.

(2) Sierks, H., et al (2015). On the nucleus structure and activity of comet 67P/Churyumov-Gerasimenko. Science, 347(6220):1044

(3) Thomas, N., Sierks, H., et al (2015). The morphological diversity of comet 67P/Churyumov-Gerasimenko. Science, 347(6220).

(4) Rotundi, A., Sierks, H., et al  (2015). Dust measurements in the coma of comet 67P/Churyumov-Gerasimenko inbound to the Sun. Science, 347:3905.

(5) Sierks, H., et al (2011). Images of Asteroid 21 Lutetia: A Remnant Planetesimal from the Early Solar System. Science, 334:487.

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