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life as we know it

Posted inResearch Spotlights

Tubos de lava terrestres podrían ofrecer información sobre la vida extraterrestre

by Aaron Sidder 29 November 202129 November 2021

Una nueva investigación encuentra que Actinobacteria en cuevas de lava fijan carbón y sobreviven independientemente de aportes superficiales, ofreciendo una nueva perspectiva en la investigación de la vida fuera de la Tierra.

Dense green pine trees form the foreground. Gray rocks forming low-relief hills are in the middle distance, dotted with green trees, with a hazy blue sky in the background.
Posted inResearch Spotlights

Extinct Style of Plate Tectonics Explains Early Earth’s Flat Mountains

by Rebecca Dzombak 7 October 202117 November 2021

The geologic record suggests that despite Earth’s hot, thin crust during the Proterozoic, mountains were still able to form thanks to an extinct style of crustal deformation.

Un buzo se acerca a roca cubierta con tapetes multicolores de bacterias.
Posted inNews

Días más largos probablemente incrementaron el oxígeno temprano de la Tierra

by Damond Benningfield 1 October 20218 April 2022

Tapetes microbianos en el sumidero del Lago Huron, combinado con modelado, sugiere que el cambio en duración del día de la Tierra podría haber jugado un rol principal en la oxigenación de la atmósfera.

Lake Cadagno—an alpine lake in Switzerland with calm blue-green waters surrounded by sharp-peaked mountains
Posted inNews

Purple Bacteria Fix Nitrogen in Proterozoic-Analogue Lake

by Elise Cutts 28 September 202129 September 2021

A new study challenges the assumption that cyanobacteria were the only major nitrogen fixers in the Proterozoic eon.

Lava tubes at Lava Beds National Monument in California
Posted inResearch Spotlights

Earthly Lava Tubes May Offer Insights into Extraterrestrial Life

by Aaron Sidder 21 September 202118 January 2022

New research finds that Actinobacteria in lava caves fix carbon and survive independent of surface inputs, offering a fresh perspective in the search for life beyond Earth.

A diver approaches rocks covered with multicolored mats of bacteria.
Posted inNews

Longer Days Likely Boosted Earth’s Early Oxygen

by Damond Benningfield 3 September 202117 November 2021

Microbial mats in a Lake Huron sinkhole, combined with modeling work, suggest that the changing length of Earth’s day could have played a key role in oxygenating the atmosphere.

A single geyser erupts steam into the sky.
Posted inFeatures

Why Study Geysers?

by S. Hurwitz, M. Manga, K. A. Campbell, C. Muñoz-Saez and E. P. S. Eibl 30 July 202125 February 2022

Aside from captivating our senses, geysers have much to tell us about subsurface fluids, climate change effects, and the occurrence and limits of life on Earth and elsewhere in the solar system.

An artist’s representation of an exoplanet with a dark surface
Posted inOpinions

“Earth Cousins” Are New Targets for Planetary Materials Research

by E. Kite, L. Kreidberg, L. Schaefer, R. Caracas and M. Hirschmann 10 June 202128 January 2022

“Cousin” worlds—slightly bigger or slightly hotter than Earth—can help us understand planetary habitability, but we need more lab and numerical experiments to make the most of this opportunity.

Artist’s depiction of Earth in a shower of cosmic rays coming from a background Sun.
Posted inNews

Taking Stock of Cosmic Rays in the Solar System

by Jure Japelj 5 May 202125 October 2021

Scientists seek to understand the elusive properties of stellar and galactic cosmic rays before searching for life on exoplanets.

Illustration of a lightning storm over volcanic land on early Earth
Posted inNews

Cloud-to-Ground Lightning May Have Struck a Key Ingredient for Life

by Jackie Rocheleau 30 April 202129 September 2021

On early Earth, rock created by lightning strikes to the ground likely held a form of phosphorus necessary for prebiotic chemistry.

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