Browsing Tag
astrobiology
16 posts
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…