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life as we know it

A view of Yellowknife Bay in Mars’s Gale crater
Posted inResearch Spotlights

Researchers Bring Early Martian Water Chemistry to Life

by Sarah Stanley 25 January 20193 January 2023

Lab experiments constrain conditions necessary for a key mineral to have formed in ancient lagoons and a crater lake.

Carbonate mineral towers in the Lost City, an undersea hydrothermal field in the Atlantis Massif in the Mid-Atlantic Ridge
Posted inScience Updates

In Search of Life Under the Seafloor

by G. L. Früh-Green and B. N. Orcutt 10 January 201918 October 2022

A multinational research team drilled into the seafloor to see whether chemical processes in exposed shallow mantle rocks could generate nutrients to support life in the subsurface.

Venus’s clouds as seen by Mariner 10 in 1974
Posted inNews

Could Life Be Floating in Venus’s Clouds?

by Kimberly M. S. Cartier 7 November 20188 September 2022

If present, microbes could explain evolving patterns in the planet’s atmosphere when observed in ultraviolet light.

Pools of briny water likely exist on Mars. Some might even exist in Gale Crater, Curiosity’s landing site, seen here.
Posted inNews

Brine Pools Emerge as a New Place to Search for Life on Mars

by Katherine Kornei 29 October 201829 September 2021

Some pools of salty water on the Red Planet could contain enough dissolved oxygen for microorganisms and sponges to survive, new calculations suggest.

Penitentes in the Andes mountains in Chile. Could similar ice spires exist on Europa?
Posted inNews

Huge Blades of Ice May Partially Cover Jupiter’s Moon Europa

by Katherine Kornei 23 October 201829 September 2021

Conditions are right for “penitentes” up to 15 meters high to form on the Jovian moon, new research shows. The spires might prevent a lander from exploring Europa’s equatorial region.

Full-scale model of the James Webb Space Telescope
Posted inNews

How Well Can the Webb Telescope Detect Signs of Exoplanet Life?

by L. Joel 24 September 20189 November 2021

Recent research suggests that NASA’s next-generation space telescope will be good—but not the best—at finding life-sustaining levels of oxygen in an exoplanet’s atmosphere.

A man exhales in a forest
Posted inNews

How Did Life Learn to Breathe?

by L. Joel 17 September 201829 September 2022

Scientists unravel the conditions under which life evolved to breathe oxygen—and the findings have some stellar implications.

A photograph taken from Alvin, a manned deep-ocean research submersible, collecting sediment cores at the ocean floor of the Dorado Outcrop in 2014.
Posted inResearch Spotlights

Life and Death in the Deepest Depths of the Seafloor

by S. Witman 15 June 201812 April 2022

Lacking light and energy, under-seafloor microbes rely on ancient organic materials to survive.

Laguna Caliente in Costa Rica
Posted inNews

Scientists Discover an Environment on the Cusp of Habitability

by Katherine Kornei 25 May 201824 February 2022

A volcanically heated Costa Rican lake hosts only one type of organism, suggesting that its Mars-like environment is just barely capable of supporting life.

Posted inEditors' Highlights

Cobalt Key to Development of Early Life on Earth

by D. Sahagian 16 March 201817 November 2021

Cobalt may have played in important role in the early development of life on Earth, and been more available to ancient life than modern due to the higher mafic composition of early continents.

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Features from AGU Journals

RESEARCH SPOTLIGHTS
JGR: Solid Earth
“New Tectonic Plate Model Could Improve Earthquake Risk Assessment”
By Morgan Rehnberg

EDITORS' HIGHLIGHTS
AGU Advances
“Eminently Complex – Climate Science and the 2021 Nobel Prize”
By Ana Barros

EDITORS' VOX
Perspectives of Earth and Space Scientists
“New Directions for Perspectives of Earth and Space Scientists”
By Michael Wysession


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