Planets intermediate in size between the Earth and Neptune, and orbiting closer to their host
stars than Mercury does the Sun, are the most common type of planet revealed by exoplanet …

Compared to the Earth, the exoplanet Kepler-78b has a similar size (1.2 R⊕) and an orbital
period a thousand times shorter (8.5 h). It is currently the smallest planet for which the mass …

Abstract The Transiting Exoplanet Survey Satellite (TESS) has a goal of detecting small
planets orbiting stars bright enough for mass determination via ground-based radial velocity …

ABSTRACT The Transiting Exoplanet Survey Satellite (TESS) is a NASA-sponsored
Explorer mission that will perform a wide-field survey for planets that transit bright host stars …

Several small dense exoplanets are now known, inviting comparisons to Earth and Venus.
Such comparisons require translating their masses and sizes to composition models of …

We describe a 20 year survey carried out by the Lick-Carnegie Exoplanet Survey Team
(LCES), using precision radial velocities from HIRES on the Keck I telescope to find and …

Over the past decade, observations of giant exoplanets (Jupiter-size) have provided key
insights into their atmospheres,, but the properties of lower-mass exoplanets (sub-Neptune) …

Abstract We describe the Next Generation Transit Survey (NGTS), which is a ground-based
project searching for transiting exoplanets orbiting bright stars. NGTS builds on the legacy of …

We use models of thermal evolution and extreme ultraviolet (XUV) driven mass loss to
explore the composition and history of low-mass, low-density transiting planets. We …

In the solar system, the planets' compositions vary with orbital distance, with rocky planets in
close orbits and lower-density gas giants in wider orbits. The detection of close-in giant …