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

The field of exoplanet atmospheric characterization has recently made considerable
advances with the advent of high-resolution spectroscopy from large ground-based …

We have collected transit times for the TRAPPIST-1 system with the Spitzer Space
Telescope over four years. We add to these ground-based, HST, and K2 transit-time …

Methane has been proposed as an exoplanet biosignature. Imminent observations with the
James Webb Space Telescope may enable methane detections on potentially habitable …

LHS 1140 b is the second-closest temperate transiting planet to Earth with an equilibrium
temperature low enough to support surface liquid water. At 1.730±0.025 R⊕, LHS 1140 b …

With sizable volatile envelopes but smaller radii than the solar system ice giants, sub-
Neptunes have been revealed as one of the most common types of planet in the galaxy …

Low-mass stars show evidence of vigorous magnetic activity in the form of large flares and
coronal mass ejections. Such space weather events may have important ramifications for the …

Spectroscopically, tidal disruption events (TDEs) are characterized by broad (∼ 10 4 km s−
1) emission lines and show a large diversity as well as different line profiles. After carefully …

The two-planet transiting system LHS 1140 has been extensively observed since its
discovery in 2017, notably with Spitzer, HST, TESS, and ESPRESSO, placing strong …

To identify promising exoplanets for atmospheric characterization and to make the best use
of observational data, a thorough understanding of their atmospheres is needed. Three …