M dwarfs show the highest rocky planet occurrence among all spectral types, in some instances within the Habitable Zone.
Habitable Zone
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
Multiverse Predictions for Habitability: Planetary Characteristics
Recent detections of potentially habitable exoplanets around sunlike stars demand increased exploration of the physical conditions that can sustain life, by whatever methods available.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
Doppler Constraints on Planetary Companions to Nearby Sun-like Stars: An Archival Radial Velocity Survey of Southern Targets for Proposed NASA Direct Imaging Missions
Directly imaging temperate rocky planets orbiting nearby, Sun-like stars with a 6-m-class IR/O/UV space telescope, recently dubbed the Habitable Worlds Observatory, is a high priority goal of the Astro2020 Decadal […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
AOTF Based Spectro-Polarimeter For Observing Earth As An Exoplanet
Earth is the only known habitable planet and it serves as a testbed to benchmark the observations of temperate and more Earth-like exoplanets.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Press Release
The CARMENES Project Boosts The Number Of Known Planets In The Solar Neighbourhood
The CARMENES program, led by a consortium of Spanish and German research institutions, in which the Max Planck Institute for Astronomy (MPIA) is a partner, has released 20,000 observations of […]
Posted inExoplanets, -moons, -comets, Habitable Zones, Press Release, Venus
The Demographics Of Terrestrial Planets In The Venus Zone
Understanding the physical characteristics of Venus, including its atmosphere, interior, and its evolutionary pathway with respect to Earth, remains a vital component for terrestrial planet evolution models and the emergence […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report, Venus
From Exo-Earths To Exo-Venuses – Flux And Polarization Signatures Of Reflected Light
Terrestrial exoplanets in habitable zones are ubiquitous. It is, however, unknown which have Earth-like or Venus-like climates.
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Habitable Zones, Plant Biology, Status Report
A New Definition of Exoplanet Habitability: Introducing the Photosynthetic Habitable Zone
It may be possible to detect biosignatures of photosynthesis in an exoplanet’s atmosphere. However, such a detection would likely require a dedicated study, occupying a large amount of telescope time.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
A Second Earth-Sized Planet in the Habitable Zone of the M Dwarf, TOI-700
We report the discovery of TOI-700 e, a 0.95 R⊕ planet residing in the Optimistic Habitable Zone (HZ) of its host star.
Posted inBiogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Press Release
The Abundance of Belatedly Habitable Planets And Ambiguities In Definitions Of The Continuously Habitable Zone
A planet’s history dictates its current potential to host habitable conditions and life. The concept of the Continuously Habitable Zone (CHZ) has been used to define the region around a […]