Context. One of the long-term goals of exoplanet science is the atmospheric characterization
of dozens of small exoplanets in order to understand their diversity and search for habitable …

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 …

We analyze the light curve of the M5. 5 dwarf Proxima Centauri obtained by the Transiting
Exoplanet Survey Satellite (TESS) in Sectors 11 and 12. In the≈ 50 day long light curve we …

The dozens of rocky exoplanets discovered in the circumstellar habitable zone (CHZ)
currently represent the most suitable places to host life as we know it outside the Solar …

Earth is the only planet known to be habitable, and is also unique with its liquid water, and
the operation of plate tectonics. The geological record shows that the habitability of our …

Little is known about the early evolution of Venus and a potential habitable period during the
first 1 billion years. In particular, it remains unclear whether or not plate tectonics and an …

This paper considers how planetesimal impacts affect planetary atmospheres. Atmosphere
evolution depends on the ratio of gain from volatiles to loss from atmosphere stripping fv; for …

Recent observations of the potentially habitable planets TRAPPIST-1 e, f, and g suggest that
they possess large water mass fractions of possibly several tens of weight percent of water …

The atmospheres of small, potentially rocky exoplanets are expected to cover a diverse
range in composition and mass. Studying such objects therefore requires flexible and wide …

Aims. The long-term carbon cycle for planets with a surface entirely covered by oceans
works differently from that of the present-day Earth because inefficient erosion leads to a …