The habitable zone (HZ) is the circular region around a star (s) where standing bodies of
water could exist on the surface of a rocky planet. Space missions employ the HZ to select …

In the last three decades, knowledge of planetary systems other than our own has increased
rapidly with the discovery of over 5,000 exoplanets (Christiansen 2022). These worlds vary …

Hydrogen cyanide (HCN) is a key feedstock molecule for the production of life's building
blocks. The formation of HCN in an N 2-rich atmospheres requires first that the triple bond …

The upcoming deployment of the James Webb Space Telescope will dramatically advance
our ability to characterize exoplanet atmospheres, both in terms of precision and sensitivity …

We present a study of the photochemistry of abiotic habitable planets with anoxic CO 2–N 2
atmospheres. Such worlds are representative of early Earth, Mars, and Venus and …

Context. An important future goal in exoplanetology is to detect and characterize potentially
habitable planets. Concepts for future space missions have already been proposed: from a …

Efforts to spectrally characterize the atmospheric compositions of temperate terrestrial
exoplanets orbiting M dwarf stars with JWST are now underway. Key molecular targets of …

Introduction The search for life on distant exoplanets is expected to rely on atmospheric
biosignatures detection, such as oxygen of biological origin. However, it is not demonstrated …

We search for superflares from 4068 cool stars in 2+ yr of Evryscope photometry, focusing
on those with high-cadence data from both Evryscope and the Transiting Exoplanet Survey …

Abstract Nitrous oxide (N 2 O)—a product of microbial nitrogen metabolism—is a compelling
exoplanet biosignature gas with distinctive spectral features in the near-and mid-infrared …