Stephan Ulamec

TL;DR: MarcoPolo-R is a sample return mission to a primitive Near-Earth Asteroid (NEA) proposed in collaboration with NASA as discussed by the authors, which will rendezvous with a primitive NEA, scientifically characterize it at multiple scales, and return a unique sample to Earth unaltered by the atmospheric entry process or terrestrial weathering.

TL;DR: In this paper, the authors review the requirements and model dielectric properties of asteroids to outline a possible instrument suite, and highlight the capabilities of radar instrumentation to achieve these observations.

TL;DR: In situ (and sample return) space missions are the most promising tools to investigate the origin and evolution of comet nuclei as discussed by the authors, and the ROSETTA Lander mission is one of the most successful space missions to date.

TL;DR: In this paper, a melting probe for exploration of Antarctic lakes has been proposed and the feasibility of the method was demonstrated and the energy demand for a space mission could be estimated, since the probe can be sterilized and the melting channel freezes immediately after the probe's passage, inhibiting exchange with the surface layers.

TL;DR: The Rosetta Lander Philae is part of the ESA Rosetta Mission which reached comet 67P/Churyumov-Gerasimenko after a 10 year cruise in August 2014.