How to Characterize Habitable Worlds and Signs of Life

Abstract

The detection of exoplanets orbiting other stars has revolutionized our view of the cosmos. First results suggest that it is teeming with a fascinating diversity of rocky planets, including those in the habitable zone. Even our closest star, Proxima Centauri, harbors a small planet in its habitable zone, Proxima b. With the next generation of telescopes, we will be able to peer into the atmospheres of rocky planets and get a glimpse into other worlds. Using our own planet and its wide range of biota as a Rosetta stone, we explore how we could detect habitability and signs of life on exoplanets over interstellar distances. Current telescopes are not yet powerful enough to characterize habitable exoplanets, but the next generation of telescopes that is already being built will have the capabilities to characterize close-by habitable worlds. The discussion on what makes a planet a habitat and how to detect signs of life is lively. This review will show the latest results, the challenges of how to identify and characterize such habitable worlds, and how near-future telescopes will revolutionize the field. For the first time in human history, we have developed the technology to detect potential habitable worlds. Finding thousands of exoplanets has taken the field of comparative planetology beyond the Solar System.

arXiv comment50 Pages, 14 figures, Annual Reviews of Astronomy and Astrophysics

References in corpus (201)

• The James Webb Space Telescope
• Habitable Zones Around Main-Sequence Stars: New Estimates
• Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1
• Detection of Planetary Transits Across a Sun-like Star
• A terrestrial planet candidate in a temperate orbit around Proxima Centauri
• Protoplanetary Disks and Their Evolution
• The PLATO 2.0 Mission
• The Occurrence and Architecture of Exoplanetary Systems
• Evolution of the Solar Activity over Time and Effects on Planetary Atmospheres: I. High-energy Irradiances (1-1700 A)
• Prevalence of Earth-size planets orbiting Sun-like stars
• DHP Framework: Digital Health Passports Using Blockchain -- Use case on international tourism during the COVID-19 pandemic
• On detecting terrestrial planets with timing of giant planet transits
• A map of the day-night contrast of the extrasolar planet HD 189733b
• Most 1.6 Earth-Radius Planets are not Rocky
• A Closely-Packed System of Low-Mass, Low-Density Planets Transiting Kepler-11
• The HARPS search for southern extra-solar planets XXXI. The M-dwarf sample
• The Occurrence Rate of Small Planets around Small Stars
• Stellar Diameters and Temperatures II. Main Sequence K & M Stars
• Extreme Water Loss and Abiotic O${}_2$ Buildup On Planets Throughout the Habitable Zones of M Dwarfs
• The Transiting Exoplanet Survey Satellite: Simulations of planet detections and astrophysical false positives
• Habitable planets around the star Gl 581?
• Biosignatures from Earth-Like Planets Around M Dwarfs
• Validation of Kepler's Multiple Planet Candidates. III: Light Curve Analysis & Announcement of Hundreds of New Multi-planet Systems
• The Effect of a Strong Stellar Flare on the Atmospheric Chemistry of an Earth-like Planet Orbiting an M dwarf
• Exoplanet Atmospheres
• Mass-Radius Relation for Rocky Planets based on PREM
• A New Family of Planets ? "Ocean Planets"
• Vegetation's Red Edge: A Possible Spectroscopic Biosignature of Extraterrestrial Plants
• Increased insolation threshold for runaway greenhouse processes on Earth like planets
• Spectral signatures of photosynthesis I: Review of Earth organisms
• The Pale Orange Dot: The Spectrum and Habitability of Hazy Archean Earth
• Transits of Earth-Like Planets
• The Habitability of Planets Orbiting M-dwarf Stars
• The Sloan Digital Sky Survey Data Release 7 Spectroscopic M Dwarf Catalog I: Data
• Warming early Mars with CO2 and H2
• Hydrogen Greenhouse Planets Beyond the Habitable Zone
• Spectral Evolution of an Earth-Like Planet
• Finding extraterrestrial life using ground-based high-resolution spectroscopy
• Spectral signatures of photosynthesis II: coevolution with other stars and the atmosphere on extrasolar worlds
• Transient reducing greenhouse warming on early Mars
• The habitability of Proxima Centauri b II. Possible climates and Observability
• The Ultraviolet Radiation Environment Around M dwarf Exoplanet Host Stars
• Kepler-62: A five-planet system with planets of 1.4 and 1.6 Earth radii in the Habitable Zone
• Three Possible Origins for the Gas Layer on GJ 1214b
• The MUSCLES Treasury Survey II: Intrinsic Lyman Alpha and Extreme Ultraviolet Spectra of K and M Dwarfs with Exoplanets
• Probabilistic Mass-Radius Relationship for Sub-Neptune-Sized Planets
• CHEOPS: A Transit Photometry Mission for ESA's Small Mission Programme
• Exploring Exoplanet Populations with NASA's Kepler Mission
• Inevitability of Plate Tectonics on Super-Earths
• A Detailed Model Grid for Solid Planets from 0.1 through 100 Earth Masses
• The habitability of Proxima Centauri b. I. Irradiation, rotation and volatile inventory from formation to the present
• Discovery and Characterization of Transiting SuperEarths Using an All-Sky Transit Survey and Follow-up by the James Webb Space Telescope
• The inner edge of the habitable zone for synchronously rotating planets around low-mass stars using general circulation models
• 3D climate modeling of close-in land planets: Circulation patterns, climate moist bistability and habitability
• Stability of Satellites Around Close-in Extrasolar Giant Planets
• Alien Maps of an Ocean-Bearing World
• Ranges of Atmospheric Mass and Composition of Super Earth Exoplanets
• Chemistry of Silicate Atmospheres of Evaporating Super-Earths
• A decreased probability of habitable planet formation around low-mass stars
• An ancient extrasolar system with five sub-Earth-size planets
• Characterization of extrasolar terrestrial planets from diurnal photometric variability
• Abiotic Ozone and Oxygen in Atmospheres Similar to Prebiotic Earth
• Can Planets survive Stellar Evolution?
• Tidally Heated Terrestrial Exoplanets: Viscoelastic Response Models
• Asynchronous rotation of Earth-mass planets in the habitable zone of lower-mass stars
• The Spectrum of Earthshine: A Pale Blue Dot Observed from the Ground
• The Effect of Host Star Spectral Energy Distribution and Ice-Albedo Feedback on the Climate of Extrasolar Planets
• Geodynamics and Rate of Volcanism on Massive Earth-like Planets
• Abiotic O${}_2$ Levels on Planets around F, G, K, and M Stars: Possible False Positives for Life?
• Water loss from terrestrial planets with CO2-rich atmospheres
• High Stellar FUV/NUV Ratio and Oxygen Contents in the Atmospheres of Potentially Habitable Planets
• Effect of UV Radiation on the Spectral Fingerprints of Earth-like Planets Orbiting M dwarfs
• Transit timing effects due to an exomoon II
• The Hunt for Exomoons with Kepler (HEK): I. Description of a New Observational Project
• The transmission spectrum of Earth through lunar eclipse observations
• A Study of the Accuracy of Mass-Radius Relationships for Silicate-Rich and Ice-Rich Planets up to 100 Earth Masses
• Detecting the Glint of Starlight on the Oceans of Distant Planets
• A Statistical Reconstruction of the Planet Population Around Kepler Solar-Type Stars
• The Radius Distribution of Planets Around Cool Stars
• The extreme physical properties of the CoRoT-7b super-Earth
• Disentangling stellar activity and planetary signals
• Habitable worlds with JWST: transit spectroscopy of the TRAPPIST-1 system?
• Abiotic formation of O2 and O3 in high-CO2 terrestrial atmospheres
• Habitable Climates: The Influence of Obliquity
• Mantle Dynamics in Super-Earths: Post-Perovskite Rheology and Self-Regulation of Viscosity
• Volatile-Rich Earth-Mass Planets in the Habitable Zone
• Habitat of early life: Solar X-ray and UV radiation at Earth's surface 4-3.5 billion years ago
• Biosignature Gases in H2-Dominated Atmospheres on Rocky Exoplanets
• Feasibility Studies for the Detection of $O_2$ in an Earth-like Exoplanet
• Variability in the super-Earth 55 Cnc e
• Remote Life Detection Criteria, Habitable Zone Boundaries, and the Frequency of Earthlike Planets around M and Late-K Stars
• Photochemistry in Terrestrial Exoplanet Atmospheres II: H2S and SO2 Photochemistry in Anoxic Atmospheres
• Observations of Exoplanet Atmospheres
• A Catalog of Kepler Habitable Zone Exoplanet Candidates
• The Role of Plate Tectonic-Climate Coupling and Exposed Land Area in the Development of Habitable Climates on Rocky Planets
• Towards the Minimum Inner Edge Distance of the Habitable Zone
• Influence of the UV Environment on the Synthesis of Prebiotic Molecules
• Spectral Fingerprints of Earth-like Planets Around FGK Stars
• UV Surface Environment of Earth-like Planets Orbiting FGKM Stars Through Geological Evolution
• The transmission spectrum of Earth-size transiting planets
• Formation, Habitability, and Detection of Extrasolar Moons
• Theoretical Spectra of Terrestrial Exoplanet Surfaces
• Indication of insensitivity of planetary weathering behavior and habitable zone to surface land fraction
• The Response of Atmospheric Chemistry on Earthlike Planets around F, G and K Stars to Small Variations in Orbital Distance
• Magnetospheric Structure and Atmospheric Joule Heating of Habitable Planets Orbiting M-dwarf Stars
• On the detectability of habitable exomoons with Kepler-class photometry
• Compositions of Hot Super-Earth Atmospheres: exploring Kepler Candidates
• Possibility of a photometric detection of "exomoons"
• Detection of Ocean Glint and Ozone Absorption Using LCROSS Earth Observations
• Astrophysical Parameters and Habitable Zone of the Exoplanet Hosting Star GJ 581
• Impact of atmospheric refraction: How deeply can we probe exo-Earth's atmospheres during primary eclipse observations?
• Thermal phase curves of nontransiting terrestrial exoplanets 1. Characterizing atmospheres
• Tidal Limits to Planetary Habitability
• Colors of a Second Earth: Estimating the fractional areas of ocean, land, and vegetation of Earth-like exoplanets
• Planets Formed in Habitable Zones of M Dwarf Stars Probably are Deficient in Volatiles
• Computing Intrinsic Lyman-alpha Fluxes of F5 V to M5 V Stars
• The Runaway Greenhouse: implications for future climate change, geoengineering and planetary atmospheres
• Identifying the rotation rate and the presence of dynamic weather on extrasolar Earth-like planets from photometric observations
• Exploring the Habitable Zone for Kepler planetary candidates
• Vegetation signature in the observed globally-integrated spectrum of Earth: Modeling the red edge strength using simultaneous cloud data and application for extrasolar planets
• Weighing "El Gordo" with a Precision Scale: Hubble Space Telescope Weak-lensing Analysis of the Merging Galaxy Cluster ACT-CL J0102-4915 at z=0.87
• Climate Stability of Habitable Earth-like Planets
• Suppression of the water ice and snow albedo feedback on planets orbiting red dwarf stars and the subsequent widening of the habitable zone
• Climate of Earth-like planets with high obliquity and eccentric orbits: implications for habitability conditions
• Terrestrial, Habitable-Zone Exoplanet Frequency from Kepler
• Glancing views of the Earth. From a lunar eclipse to an exoplanetary transit
• Highlights in the Study of Exoplanet Atmospheres
• Calculating the Habitable Zone of Binary Star Systems I: S-Type Binaries
• Detecting planetary geochemical cycles on exoplanets: Atmospheric signatures and the case of SO2
• Atmospheric mass loss by stellar wind from planets around main sequence M stars
• Calculating the Habitable Zone of Binary Star Systems II: P-Type Binaries
• UV Surface Habitability of the TRAPPIST-1 System
• Detecting companions to extrasolar planets using mutual events
• Characterizing Habitable Exo-Moons
• The Occurrence Rate of Earth Analog Planets Orbiting Sunlike Stars
• Limit cycles can reduce the width of the habitable zone
• Using Dimers to Measure Biosignatures and Atmospheric Pressure for Terrestrial Exoplanets
• Candidate Planets in the Habitable Zones of Kepler Stars
• The Interior Dynamics of Water Planets
• The Solar Neighborhood. XXVI. AP Col: The Closest (8.4 pc) Pre-Main-Sequence Star
• The potential for tidally heated icy and temperate moons around exoplanets
• On the Habitable Zones of Circumbinary Planetary Systems
• Colors of a Second Earth II: Effects of Clouds on Photometric Characterization of Earth-like Exoplanets
• The Earth as an extrasolar transiting planet: Earth's atmospheric composition and thickness revealed by Lunar eclipse observations
• About Exobiology: The Case for Dwarf K Stars
• The habitable zone of Earth-like planets with different levels of atmospheric pressure
• Ultraviolet Radiation Constraints around the Circumstellar Habitable Zones
• Habitability of Exomoons at the Hill or Tidal Locking Radius
• The Center of Light: Spectroastrometric Detection of Exomoons
• On the protection of extrasolar Earth-like planets around K/M stars against galactic cosmic rays
• Transient Sulfate Aerosols as a Signature of Exoplanet Volcanism
• HiRes Deconvolved Spitzer Images of 89 Protostellar Jets and Outflows: New Data on Evolution of Outflow Morphology
• S-Type and P-Type Habitability in Stellar Binary Systems: A Comprehensive Approach. I. Method and Applications
• Detecting Volcanism on Extrasolar Planets
• A 1D microphysical cloud model for Earth, and Earth-like exoplanets. Liquid water and water ice clouds in the convective troposphere
• Spectral features of Earth-like planets and their detectability at different orbital distances around F, G, and K-type stars
• The persistence of oceans on Earth-like planets: insights from the deep-water cycle
• Supernova 2010as: the Lowest-Velocity Member of a Family of Flat-Velocity Type IIb Supernovae
• Cryptic photosynthesis, Extrasolar planetary oxygen without a surface biological signature
• Microlensing Detections of Moons of Exoplanets
• Clouds and the Faint Young Sun Paradox
• Viscoelastic Models of Tidally Heated Exomoons
• The unstable CO2 feedback cycle on ocean planets
• Exploring the Origins of Deuterium Enrichments in Solar Nebular Organics
• Habitable Zones of Post-Main Sequence Stars
• The Effect of Lunar-like Satellites on the Orbital Infrared Light Curves of Earth-analog Planets
• Light and Life: Exotic Photosynthesis in Binary Star Systems
• Transient conditions for biogenesis on low-mass exoplanets with escaping hydrogen atmospheres
• Inferring Planetary Obliquity Using Rotational & Orbital Photometry
• Effect of Metallicity on the Evolution of the Habitable Zone from the Pre-Main Sequence to the Asymptotic Giant Branch and the Search for Life
• Characterizing the purple Earth: Modelling the globally-integrated spectral variability of the Archean Earth
• Analytical investigation of the decrease in the size of the habitable zone due to limited CO${}_2$ outgassing rate
• A possible activity cycle in Proxima Centauri
• Co-evolution of atmospheres, life, and climate
• The Spatially Uniform Spectrum of the Fermi Bubbles: the Leptonic AGN Jet Scenario
• Earthshine observation of vegetation and implication for life detection on other planets - A review of 2001 - 2006 works
• Possibility of Detecting Moons of Pulsar Planets Through Time-of-Arrival Analysis
• A False Positive For Ocean Glint on Exoplanets: the Latitude-Albedo Effect
• A Possible Aeronomy of Extrasolar Terrestrial Planets
• Assessing Circumbinary Habitable Zones using Latitudinal Energy Balance Modelling
• Can Life develop in the expanded habitable zones around Red Giant Stars?
• Dynamical Effects on the Habitable Zone for Earth-like Exomoons
• Is the Pale Blue Dot unique? Optimized photometric bands for identifying Earth-like exoplanets
• Quantum Calculation of Inelastic CO Collisions with H: I. rotational quenching of low-lying rotational levels
• Photometric Variability of the Disk Integrated Infrared Emission of the Earth
• Colors of extreme exo-Earth environments
• The Abundance of Atmospheric CO2 in Ocean Exoplanets: A Novel CO2 Deposition Mechanism
• Blazar Anti-Sequence of Spectral Variation within individual Blazars: Cases for Mrk 501 and 3C 279
• On the Intrinsic Continuum Linear Polarization of Classical Be Stars during Disk Growth and Dissipation
• The dependence of the ice-albedo feedback on atmospheric properties
• Clouds in the atmospheres of extrasolar planets. V. The impact of CO2 ice clouds on the outer boundary of the habitable zone
• Volatile Transport inside Super-Earths by Entrapment in the Water Ice Matrix
• Exomoon simulations
• Earth's albedo variations 1998-2014 as measured from ground-based earthshine observations
• A population-based Habitable Zone perspective
• Biofluorescent Worlds II. Biological fluorescence induced by stellar UV flares, a new temporal biosignature
• In Situ Models for Planet Assembly around Cool stars
• The infrared imaging spectrograph (IRIS) for TMT: sensitivities and simulations
• Tohoku-Hiroshima-Nagoya planetary spectra library: A method for characterizing planets in the visible to near infrared
• Propagation Characteristics of Two Coronal Mass Ejections From the Sun Far into Interplanetary Space
• Kepler exoplanets: a new method of population analysis

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• Molecular Cross Sections for High Resolution Spectroscopy of Super Earths, Warm Neptunes and Hot Jupiters
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