In the coming years and decades, advanced space-and ground-based observatories will
allow an unprecedented opportunity to probe the atmospheres and surfaces of potentially …

Rocky planets are common around other stars, but their atmospheric properties remain
largely unconstrained. Thanks to a wealth of recent planet discoveries and upcoming …

One aim of modern astronomy is to detect temperate, Earth-like exoplanets that are well
suited for atmospheric characterization. Recently, three Earth-sized planets were detected …

Earth has had oceans for nearly four billion years and Mars had lakes and rivers 3.5–3.8
billion years ago. However, it is still unknown whether water has ever condensed on the …

In the past decade, observations from space and the ground have found water to be the
most abundant molecular species, after hydrogen, in the atmospheres of hot, gaseous …

The search for life in the Universe is a fundamental problem of astrobiology and modern
science. The current progress in the detection of terrestrial-type exoplanets has opened a …

One popular view of Venus' climate history describes a world that has spent much of its life
with surface liquid water, plate tectonics, and a stable temperate climate. Part of the basis for …

Star-like objects with effective temperatures of less than 2,700 kelvin are referred to as
'ultracool dwarfs'. This heterogeneous group includes stars of extremely low mass as well as …

In this work we discuss various selected mission concepts addressing Venus evolution
through time. More specifically, we address investigations and payload instrument concepts …

Radial velocity monitoring has found the signature of a Msini= 1.3M⊕ planet located within
the habitable zone (HZ) of Proxima Centauri. Despite a hotter past and an active host star …