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life as we know it

An artist’s impression of planet formation: Close to the star, dust particles grow into planetesimals and Earth-like planets. Farther away, gas accretes on planetary cores to create Jupiter-like giants.
Posted inNews

Krypton Isotopes Provide New Clues to Planets’ Pasts

by Carolyn Wilke 4 May 20224 May 2022

To trace how crucial ingredients for life arrived at Earth, scientists track noble gases. Now, improved methods are drawing new clues from krypton, the most cryptic of noble gases.

Lightning over water
Posted inResearch Spotlights

Lightning Had Difficulty Forming in Early Earth’s Atmosphere

by Rebecca Dzombak 8 April 202225 April 2022

Lightning could have sparked the beginnings of life, but the primordial atmosphere might have made it more difficult for lightning to initiate.

An impact on the surface of Mars creates a shower of debris.
Posted inNews

Martian Meteorites Reveal Evidence of a Large Impact

by Katherine Kornei 15 March 202215 March 2022

By analyzing rare Martian meteorites, researchers have uncovered a crystalline structure created by a large asteroid or comet impact that potentially affected the Red Planet’s habitability.

This aerial image shows two researchers exploring a sunken spring in the middle of a gray and white icy landscape. One researcher, dressed in blue, crouches inside a circular hole in the ice while a second researcher, dressed in black, stands to the left taking a photo.
Posted inNews

Lipids from Europa’s Ocean Could Be Detectable on the Surface

by Kimberly M. S. Cartier 10 March 202210 March 2022

A super salty spring in the Canadian Arctic provides insights key to detecting life on a distant ocean world.

A selfie of NASA’s Curiosity rover, in the northwestern part of Gale crater
Posted inResearch Spotlights

科学家倒转时间追踪火星上的甲烷排放

by JoAnna Wendel 24 February 202224 February 2022

火星上甲烷的峰值可能来自盖尔陨石坑内部,NASA的“好奇号”探测器目前正在那里进行探测。

Illustration of an exoplanet in the foreground with other exoplanets and their host star in the distance
Posted inFeatures

Tidally Locked and Loaded with Questions

by Caroline Hasler 17 February 202217 February 2022

Tidally locked planets always present the same face to their host stars. What does this mean for their potential to support life?

Illustration of the surface of early Earth with an orange sky (with a meteorite streaking through it), a green ocean, a large island landmass, an impact crater, and underwater volcanoes.
Posted inScience Updates

Rethinking the Search for the Origins of Life

by Dustin Trail, Jamie Elsila, Ulrich F. Müller, Timothy Lyons and Karyn L. Rogers 4 February 20224 May 2022

Early Earth conditions and the chemistry that led to life were inextricably interwoven. Earth scientists and prebiotic chemists are working together in new ways to understand how life first emerged.

Martian meteorite ALH84001 shown with a 1-centimeter cube for scale
Posted inNews

A New Explanation for Organics on a Mars Rock That Fell to Earth

by Derek Smith 26 January 20228 March 2022

Organic molecules on a Martian meteorite have fueled nearly 30 years of scientific debate. New evidence suggests they were formed by Martian processes, offering more support for a once habitable environment on the Red Planet.

A selfie of NASA’s Curiosity rover, in the northwestern part of Gale crater
Posted inResearch Spotlights

Scientists Turn Back Time to Track Methane Emissions on Mars

by JoAnna Wendel 14 January 202224 February 2022

Period spikes of methane on Mars could originate inside Gale crater, where NASA’s Curiosity rover is currently exploring.s

Artist’s rendering of Earth’s magnetic field, which connects the North Pole with the South Pole
Posted inNews

Oldest Pole Reversal Shows Early Earth Was Well Suited for Life

by Zack Savitsky 15 December 202115 December 2021

Australian rocks 3.25 billion years old preserved the oldest signs of Earth’s stable magnetic field and quickly moving crust, critical elements of life’s evolution.

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From AGU Journals

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“Exploring Ocean Circulation on Icy Moons Heated from Below”
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