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Mars

Posted inEditors' Highlights

Young Ponds on Mars

by Francis Nimmo 25 February 202215 March 2022

A detailed study of evaporite (chloride) deposits on Mars shows that small bodies of surface water persisted until about 2.5 Ga, more recently than previously thought.

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

JoAnna Wendel, freelance science writer and illustrator 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。

Visualization of a methane plume in Mars’ atmosphere during the northern summer season as retrieved from NASA's Infrared Telescope Facility at Mauna Kea, Hawaii.
Posted inEditors' Vox

The Mystery of Methane on Mars Thickens

by Germán Martinez, Anni Määttänen and David Baratoux 15 February 20223 January 2023

Two recently published papers zoom in on the mystery source of methane in the Martian atmosphere.

Simulation of ions escaping the Martian atmosphere
Posted inResearch Spotlights

Measuring Carbon Ion Loss from the Martian Atmosphere

by Morgan Rehnberg 8 February 202210 March 2022

The flux, observed with NASA’s MAVEN spacecraft, is in line with models and 1–2 orders of magnitude lower than that of oxygen ions.

Inspecting mine drainage in a river
Posted inEditors' Vox

Using Hematite to Decipher Past Climates and Environments

by Zhaoxia Jiang, Qingsong Liu, Andrew Roberts, Mark J. Dekkers, Vidal Barrón, José Torrent and Sanzhong Li 7 February 20223 January 2023

The magnetic and color properties of the mineral hematite give clues to past environmental conditions and is being used for paleoclimatic reconstruction.

Dry Falls located at the head of Grand Coulee
Posted inResearch Spotlights

Western U.S. “Megafloods” Might Not Have Been So Mega

by Rebecca Dzombak 3 February 20223 February 2022

The flooding that carved eastern Washington State 20,000 to 12,000 years ago could have been 80% smaller than the canyons’ volume today.

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

JoAnna Wendel, freelance science writer and illustrator by JoAnna Wendel 14 January 202224 April 2024

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

An image of lake-floor sedimentary deposits from Mars’s Gale crater
Posted inResearch Spotlights

Machine Learning Algorithms Help Scientists Explore Mars

JoAnna Wendel, freelance science writer and illustrator by JoAnna Wendel 12 January 202224 April 2024

Researchers applied machine learning algorithms to several distinct chemical compositions of Mars and suggest that these algorithms could be a powerful tool to map the planet’s surface on a large scale.

Satellite view of frosty sand dunes on Mars
Posted inScience Updates

Planetary Dunes Tell of Otherworldly Winds

by Timothy Titus, Serina Diniega, Lori K. Fenton, Lynn Neakrase and James Zimbelman 22 December 202116 February 2022

On Earth and throughout our solar system, ripples and dunes in sand and dust offer insights into how winds blow, liquid currents flow, and solid particles fly and bounce over the terrain.

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