Conceptual image of meteoroids delivering nucleobases to ancient Earth. The nucleobases are represented by structural diagrams with hydrogen atoms as white spheres, carbon as black,…
Posts published in “Astrobiology”
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This artist’s conception shows how double ridges on the surface of Jupiter’s icy moon Europa may form over shallow, refreezing water pockets within the ice…
An artist’s interpretation of liquid water on the surface of the Europa pooling beneath chaos terrain. Credit: NASA/JPL-Caltech JupiterJupiter is the largest planet in the…
Compelling Sign of Alien Life: Methane Could Be the First Detectable Indication of Life Beyond Earth
Methane in a planet’s atmosphere may be a sign of life if nonbiological sources can be ruled out. This illustration summarizes the known abiotic sources…
Artist’s impression of the Hadean Eon. Credit: Tim Bertelink, CC BY-SA 4.0 Earth formed from the Sun’s protoplanetary disk about 4.6 billion years ago. In…
The only references we have for “life” are the forms we know on Earth. Astrobiologists suspect that the search for alien life, and even for…
An artist’s conception of the early Earth. Credit: Simone Marchi/SwRI Researchers at Yale and Caltech have a bold new theory to explain how Earth transformed…
Using the Atacama Large Millimeter/submillimeter Array (ALMAThe Atacama Large Millimeter/submillimeter Array (ALMA) is the largest ground-based facility for observations in the millimeter/submillimeter regime in the…
The search for alien life has been restricted to using life on Earth as the reference, essentially looking for “life as we know it” beyond…
This image of Earth was compiled using tens of thousands of images from the Copernicus Sentinel-2 mission. Thanks to the satellite era, we are better…
This artist’s conception shows the fully unfolded James Webb Space Telescope in space. Credit: Adriana Manrique Gutierrez, NASA Animator The James Webb Space TelescopeThe James…
This artist’s concept portrays the seven rocky exoplanets within the TRAPPIST-1 system, located 40 light-years from Earth. Credit: NASA and JPL/Caltech Five years ago, astronomers…
This artist’s impression shows a rocky exoplanet with a wispy, cloudy atmosphere orbiting a red dwarf star. Credit: L. Hustak and J. Olmsted (STScI) The…
Dr. Serge Krasnokutski studies the formation of biomolecules at low temperature in a vacuum. Credit: Jens Meyer/University of Jena Research team from Friedrich Schiller University…
Ironstones deposited on the seafloor nearly two billion years ago now occur as rocky outcrops along the lakeshore of Tu Nedhé (Northwest Territories, Canada). Credit:…
Artist’s depiction of the star EK Draconis ejecting a coronal mass ejection as two planets orbit. Credit: National Astronomical Observatory of Japan In the search…
Webb Space Telescope Provides New Tools To Search for the Building Blocks of Life on Distant Planets
This artist’s conception shows the fully unfolded James Webb Space Telescope in space. Credit: Adriana Manrique Gutierrez, NASA Animator How NASA in Silicon Valley Will…
Carbon is critical to life, as far as we know. So anytime we detect a strong carbon signature somewhere like MarsMars is the second smallest…
The extremely harsh Laguna Caliente lake in the crater of the Poás volcano, Costa Rica. Credit: Justin Wang Lake is dominated by bacteria from a…
A selfie taken by NASA’s Curiosity Mars rover on Sol 2291 at the “Rock Hall” drill site, located on Vera Rubin Ridge. Reduced carbon released…