Could there be life in helium atmospheres on exoplanets?
View larger. | Artist’s concept of an exoplanet with a helium-dominated atmosphere. A new study suggests that there…
Hidden Clues in Spirit Rover Data Suggest Mars Once Had Far More Water than Scientists Realized
A new look at more than two decades’ worth of archival data from NASA’s Spirit mission suggests that…
Europa’s Ice Shell May Be Tougher Barrier than Planetary Scientists Hoped
Europa’s subsurface ocean has long topped astrobiologists’ wish lists as a place to search for life beyond Earth.…
Barnard’s Star Planetary System May Be Filled with Water-Poor Rocky Worlds
A new analysis suggests the four sub-Earth exoplanets orbiting Barnard’s star — the Sun’s nearest single-star neighbor —…
Astronomers Find Potentially Habitable Super-Earth Just 25 Light-Years Away
Astronomers have discovered a rocky exoplanet about twice Earth’s size just 25 light-years away, orbiting in the habitable…
ThousandWorlds: A Benchmark For Climate Emulation Of Potentially Habitable Exoplanets
Dataset overview. Output fields are defined on a 32 × 64 latitude–longitude grid. There are 53 fields in…
New habitable exoplanets model narrows down search for life
View larger. | Artist’s concept of Kepler-186f, an Earth-sized exoplanet in the habitable zone of its star, where…
Summary Of The First Year Of The Space Weather Around Young Suns Program: 900 Hours Of Low-frequency Radio And Optical Data Dedicated To Young, Solar-type Stars
3C 305’s dynamic spectrum (top right), per-integration (black points) and time-averaged (colored points) spectra (top left), and frequency-averaged…
Reflections of Life: Distinguishing Living from Nonliving Worlds with Complexity Metrics
Biosignatures & Paleobiology Status Report The Astronomical Journal June 14, 2026 Analysis pipeline employed in the present work.…
Connecting Polarization To Exoplanet Yield Calculations For Habitable Worlds Observatory (HWO)
Overview of the simulation pipeline components used in this work. The modeling begins with hwo pol, a Poke…
Ultraviolet-Driven Atmospheric Degeneracies Challenge Conventional Biosignature Frameworks for Terrestrial Planets with Ultracool M Dwarf Hosts: An Archean-Analog TRAPPIST-1 e Case Study
Comparison of input SEDs used in this study and molecular photoabsorption cross sections relevant to Archean-analog photochemistry. The…
Predictive Rankings of the Probability for Temperate Terrestrial Worlds for the HWO ExEP Mission Star List
The simulated occurrence rates of planets in both simulated (blue) and known (orange) planetary systems around nearby stars.…