Browsing Tag
astrobiology
20 posts
A rocky planet in its star’s ‘habitable zone’ could be the first known to have an atmosphere – here’s what we found
Hannah Wakeford, University of Bristol and Ryan MacDonald, University of St Andrews New research using Nasa’s powerful JWST…
NASA’s rover finds potential sign of life on Mars
NASA’s Perseverance rover has discovered potential biosignatures in a Martian rock sample, indicating the presence of iron-rich minerals and organic carbon, which suggests a past habitable environment that may have been sustained by microbial life.
This Rock Is Older Than the Solar System
Containing the building blocks of DNA and stardust older than the Sun, the Murchison meteorite offers an unprecedented glimpse into the origins of our solar system and life itself.
Did Cosmic Rays Decide the Shape of Your DNA?
The very twist of your DNA might be a direct consequence of a fundamental asymmetry in the universe, delivered to the primordial Earth by high-energy cosmic rays.
Study: Mars self-regulated as a desert planet
New research suggests a negative feedback loop involving carbon-trapping rocks may have doomed Mars to become a self-regulating desert planet with only fleeting periods of habitability.
‘Extraordinary claims require extraordinary evidence’ − an astronomer explains how much evidence scientists need to claim discoveries like extraterrestrial life
The universe is filled with countless galaxies, stars and planets. Astronomers may find life one day, but they…
Scientists claim to have found evidence of alien life. But ‘biosignatures’ might hide more than they reveal
Artist’s impression of the exoplanet K2-18b. A. Smith/N. Madhusudhan (University of Cambridge) Campbell Rider, University of Sydney Whether…
The (Possible) Cosmic Origins of DNA
The theory of pseudo-panspermia suggests that the essential building blocks of life, such as amino acids and nucleobases,…
Newly Discovered Exoplanet HD 20794 d Found in Habitable Zone of Nearby Star
At a Glance An international team of researchers has confirmed the discovery of a new exoplanet called HD…
Carl Sagan’s scientific legacy extends far beyond ‘Cosmos’
Carl Sagan at his Cornell University laboratory in Ithaca, N.Y., in 1974. Santi Visalli, Inc./Archive Photos via Getty…