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…
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…
Mars Mission: A Stress Test For The Search For Life
The Murchison meteorite fell in Australia in 1969, breaking into numerous fragments. It belongs to the carbonaceous chondrite…
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.…
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…
Transport of Water In A Transient, Impact-Generated Atmosphere On Mercury
Initial structure of the Impact Plume 60 s post impact. The impactor strikes from the left, at a…
Titan’s Organic World – Astrobiology
Illustration of the thermal structure of Titan’s atmosphere and its atmospheric processes. It illustrates the high-altitude photochemistry of…