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.
What role can the relationship between oxygen (O2) and ozone (O3) in exoplanet atmospheres have on detecting biosignatures? This is what a study submitted to Astronomy & Astrophysics hopes to address as an international team ...
Astrobiology
Sep 1, 2025
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The Earth supports the only known life in the universe, all of it depending heavily on the presence of liquid water to facilitate chemical reactions. While single-celled life has existed almost as long as Earth itself, it ...
Astrobiology
Sep 1, 2025
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At first glance, Saturn's moon Enceladus seems rather unremarkable: it is much smaller than the Earth's moon and is far away and completely covered in ice.
Astrobiology
Aug 29, 2025
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154
The sun will someday die. This will happen when it runs out of hydrogen fuel in its core and can no longer produce energy through nuclear fusion as it does now. The death of the sun is often thought of as the end of the solar ...
Astrobiology
Aug 28, 2025
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A new study by Manuel Barrientos and colleagues from the University of Oklahoma reveals that between 0.6% and 2.5% of white dwarfs in our solar neighborhood undergo dramatic cooling delays that could extend habitable zones ...
Astronomy
Aug 28, 2025
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How do tidal forces shape a planet's orbital evolution, especially for those in the habitable zone? A recently submitted study aims to answer this question, as an international team of researchers investigated how tidal forces ...
Astrobiology
Aug 20, 2025
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The exoplanet TRAPPIST-1 d intrigues astronomers looking for possibly habitable worlds beyond our solar system because it is similar in size to Earth, rocky, and resides in an area around its star where liquid water on its ...
Astrobiology
Aug 13, 2025
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Water is essential for life on Earth. So, the liquid must be a requirement for life in other worlds. For decades, scientists' definition of habitability on other planets has rested on this assumption.
Astrobiology
Aug 11, 2025
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97
A team led by UdeM researchers confirms a fifth potentially habitable planet around L 98-59, a red dwarf 35 light-years away.
Planetary Sciences
Jul 22, 2025
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97
The search for habitable exoplanets is a key priority and sits at the pinnacle of exoplanet science. The science community stated that clearly in the 2020 Survey on Astronomy and Astrophysics 2020 (Astro2020). That survey ...
Planetary Sciences
Jul 16, 2025
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