The habitable zone as a research area focuses on defining and characterizing the circumstellar regions where planetary surface conditions could permit stable liquid water, given realistic atmospheric and geophysical constraints. This field integrates stellar astrophysics, planetary climate modeling, atmospheric radiative–convective equilibrium, and orbital dynamics to compute inner and outer habitable zone boundaries as functions of stellar type, luminosity evolution, and planetary properties. Researchers investigate feedbacks such as the carbonate–silicate cycle, cloud processes, greenhouse limits, and water loss, and extend the concept to temporal (continuously habitable) zones and system-level habitability, including multiplanet interactions and stellar activity effects on long-term planetary climate stability.
Our solar system hosts almost 900 known moons; more than 400 orbit the eight planets while the remaining orbit dwarf planets, asteroids, and Trans-Neptunian Objects (TNOs). Of these, only a handful are targets for astrobiology ...
Astrobiology
Feb 23, 2026
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Sending a mission to the solar gravitational lens (SGL) is the most effective way of actually directly imaging a potentially habitable planet, as well as its atmosphere, and even possibly some of its cities. But, the SGL ...
Space Exploration
Feb 11, 2026
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Using HARPS and HARPS-N spectrographs, astronomers have observed a nearby K-type star designated HD 176986, known to host two super-Earth exoplanets. The observations resulted in the discovery of another planet in the system ...
Dr. Leonardos Gkouvelis, researcher at LMU's University Observatory Munich and member of the ORIGINS Excellence Cluster, has solved a fundamental mathematical problem that had obstructed the interpretation of exoplanet atmospheres ...
Astronomy
Jan 30, 2026
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65
Scientists continue to mine data gathered by NASA's Kepler Space Telescope, retired in 2018, and continue to turn up surprises. A new paper reveals the latest: a possible rocky planet slightly larger than Earth, orbiting ...
Astrobiology
Jan 28, 2026
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239
Astronomers have long searched for life within a rather narrow ring around a star, the "habitable zone," where a planet should be neither too hot nor too cold for liquid water. A new study argues that this ring is too strict: ...
Astrobiology
Jan 22, 2026
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144
How can scientists estimate the pH level of Enceladus' subsurface ocean without landing on its surface? This is what a study recently posted to the arXiv preprint server hopes to address as a team of scientists from Japan ...
Planetary Sciences
Jan 21, 2026
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At the beginning of the exoplanet age, the goals were fairly simple. The first was to find as many of them as possible to flesh out our understanding of the exoplanet population. The second was to determine if any were in ...
Astrobiology
Jan 15, 2026
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We live in a very exciting time: answers to some of the oldest questions humanity has conceived are within our grasp. One of these is whether Earth is the only place that harbors life.
Planetary Sciences
Jan 12, 2026
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A new study led by a Georgia State University astronomy graduate student is a major step forward in the search for stars that could host Earth-like planets that may prove to be good havens for life to develop. Sebastián ...
Astrobiology
Jan 6, 2026
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