The physical properties of cometary nuclei observed today relate to their complex history
and help to constrain their formation and evolution. In this article, we review some of the …

Due to its abundance and unique properties, water is a major actor in the formation and
evolution of many planetary surfaces as well as a sensitive and reliable tracer of past …

Lobate debris aprons, known to be geomorphic landform indicators of the presence of
ground ice, are of special interest for future missions devoted to the research of water on …

The search for evidence of past or present life on Mars is the principal objective of the 2020
ESA-Roscosmos ExoMars Rover mission. If such evidence is to be found anywhere, it will …

The recurring slope lineae on Mars have been hypothesized to originate from snow melting,
deliquescence, dry flow or shallow groundwater. Except for the dry flow origin, these …

Shallow aquifers are the largest freshwater bodies in the North African Sahara and the
Arabian Peninsula. Their groundwater dynamics and response to climatic variability and …

The cavi unit at the north pole of Mars is a deposit of aeolian sand and water ice underlying
the Late Amazonian north polar layered deposits. Its strata of Middle to Late Amazonian age …

Shallow aquifer map** and large-scale characterization of groundwater dynamics in the
Saharan-Arabian desert is largely impeded by the limited hydrological datasets from sparse …

Determining the three‐dimensional (3‐D) structure of the Martian polar caps is fundamental
to understanding their hydrologic history, dynamic behavior, past climatic changes, and the …

The aim of this paper is to present the concept of a dedicated gravity field mission for the
planet Mars, the Mars Quantum Gravity Mission (MaQuIs). The mission is targeted at …