The Super-Earth Opportunity - Search for Habitable Exoplanets in the 2020s

Abstract

The recent discovery of a staggering diversity of planets beyond the Solar System has brought with it a greatly expanded search space for habitable worlds. The Kepler exoplanet survey has revealed that most planets in our interstellar neighborhood are larger than Earth and smaller than Neptune. Collectively termed super-Earths and mini-Neptunes, some of these planets may have the conditions to support liquid water oceans, and thus Earth-like biology, despite differing in many ways from our own planet. In addition to their quantitative abundance, super-Earths are relatively large and are thus more easily detected than true Earth twins. As a result, super-Earths represent a uniquely powerful opportunity to discover and explore a panoply of fascinating and potentially habitable planets in 2020 - 2030 and beyond.

Science white paper submitted to the 2020 Astronomy and Astrophysics Decadal Survey

References in corpus (6)

• The Transiting Exoplanet Survey Satellite
• A terrestrial planet candidate in a temperate orbit around Proxima Centauri
• Mass-Radius Relationships for Solid Exoplanets
• Ocean Planet or Thick Atmosphere: On the Mass-Radius Relationship for Solid Exoplanets with Massive Atmospheres
• Ranges of Atmospheric Mass and Composition of Super Earth Exoplanets
• Atmospheric characterization of Proxima b by coupling the Sphere high-contrast imager to the Espresso spectrograph

Cited by in corpus (1)

• Overview and Reassessment of Noise Budget of Starshade Exoplanet Imaging