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life as we know it

Solar flares took place much more frequently 4 billion years ago than today, bombarding Earth with energetic protons and radiation.
Posted inNews

Did Solar Flares Cook Up Life on Earth?

JoAnna Wendel, freelance science writer and illustrator by JoAnna Wendel 23 May 201612 October 2022

Scientists have found that "super" solar flares could have warmed the ancient planet and jump-started life.

The solar system’s new habitable zone after our Sun becomes a red giant.
Posted inNews

Aging Stars Make New Habitable Zones

JoAnna Wendel, freelance science writer and illustrator by JoAnna Wendel 16 May 201629 September 2021

Scientists searching for life in the universe now have a new target: the once-icy worlds orbiting red giants.

Unnamed crater in eastern Hesperia Planum, Mars.
Posted inResearch Spotlights

Martian Carbonates Spotted by the Orbiter

Kate Wheeling, freelance science writer by Kate Wheeling 3 May 201628 July 2022

The minerals identified by the Mars Reconnaissance Orbiter provide more evidence that the planet may have once been habitable.

This relatively recent impact crater photographed last year spans a little more than a kilometer in the Sirenum Fossae region of Mars.
Posted inNews

Impacts Might Have Made Ancient Mars Briefly Hospitable to Life

Shannon Hall by S. Hall 28 April 201628 January 2022

A bombardment of the Red Planet 4 billion years ago could have created hot springs that allowed life to flourish.

Posted inScience Updates

Planetary Caves' Role in Astronaut Bases and the Search for Life

by J. J. Wynne, Timothy Titus and P. J. Boston 8 March 201631 March 2022

2nd International Planetary Caves Conference; Flagstaff, Arizona, 20–23 October 2015

Posted inNews

New NOVA TV Show Explores Coevolution of Rocks and Life

by Randy Showstack 13 January 20166 October 2022

Mineralogist Robert Hazen and other scientists probe connections between living organisms and rocks in "Life's Rocky Start," which premieres tonight on PBS stations around the United States.

Posted inScience Updates

Where Curiosity Has Taken Us

by A. R. Vasavada 12 January 201624 April 2024

The Curiosity rover, one of NASA's flagship missions, analyzes Martian geology, geochemistry, climatology, and radiation to assess whether Mars could have supported microbial life.

Posted inNews

Atmospheres Can Collapse on the Dark Sides of Planets

Cody Sullivan by C. Sullivan 29 December 20151 August 2022

Planets that orbit close to their stars might lose their atmospheres along with any chance of life, but new models show a way in which these planets may retain their atmospheres and habitability.

Posted inResearch Spotlights

Curiosity Rover Finds Organic Molecules on Martian Surface

by David Shultz 12 October 201524 April 2024

Scientists assess the present and past habitability of Mars from organic compounds detected at Gale Crater.

Posted inNews

Astrobiology Hearing Ranges Beyond Life as We Know It

by Randy Showstack 5 October 201511 January 2022

Space research has made strides identifying where extraterrestrial life might reside but not what kind of life, if any, it could be, scientists told Congress last week.

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Over a dark blue-green square appear the words Special Report: The State of the Science 1 Year On.

Features from AGU Publications

Research Spotlights

The Under-the-Radar Creeks That Are Sweeping Carbon Out of Salt Marshes

11 August 202611 August 2026
Editors' Highlights

Streamflow From Generative AI

12 August 202611 August 2026
Editors' Vox

Introducing Research Letters in Paleoceanography and Paleoclimatology

12 August 202610 August 2026
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