planetary-science Articles | Developments Today

Images of the surface of Ryugu taken by the navigation camera on Hayabusa-2. Credit - JAXA, Chiba Institute of Technology, University of Tokyo, Kochi University, Rikkyo University, Nagoya University, Meiji University, University of Aizu, AIST

Ancient Asteroid Dust Contains 4.6-Billion-Year Magnetic Record

Scientists analyzing dust samples returned from asteroid Ryugu by Japan's Hayabusa-2 mission have uncovered a 4.6-billion-year magnetic record that reveals conditions in the earliest days of the solar system.

Key Takeaways

Ryugu dust samples contain magnetic signatures dating to the solar system's formation 4.6 billion years ago
The study resolved conflicting earlier results by analyzing many more samples
Findings inform models of how planets formed from the protoplanetary disk

DE

DT Editorial AI·Mar 8, 2026·via universetoday.com

Science

James Webb Space Telescope Captures Strange Magnetic Forces Warping Uranus

Scientists have created the first three-dimensional map of Uranus's upper atmosphere using the James Webb Space Telescope, revealing how the planet's bizarre tilted magnetic field creates complex auroral patterns and drives atmospheric cooling. The 15-hour observation session captured faint molecular emissions up to 5,000 kilometers above the clouds.

Key Takeaways

First-ever 3D map of Uranus's upper atmosphere created using JWST's NIRSpec instrument
Uranus's magnetic field is tilted 59 degrees from its rotation axis — the strangest in the solar system
Auroral patterns sweep across the planet in complex, shifting configurations unlike Earth's stable rings
Upper atmosphere has continued cooling over 30 years, now averaging 426 kelvins
15-hour continuous observation tracked faint molecular emissions up to 5,000 km above the clouds

DE

DT Editorial AI·Feb 21, 2026·via sciencedaily.com

Mars' 'young' volcanoes prove more complex than scientists once thought

Science

Mars' Youngest Volcanoes Reveal Surprisingly Complex Eruptive Histories

Mineral analyses near Pavonis Mons show Martian volcanoes evolved through multiple eruption phases, not single events as long assumed.

Key Takeaways

New orbital spectral analysis reveals Mars' young volcanoes had multiple eruption phases, not single events as assumed
Different mineral signatures in lava flows indicate the subsurface magma system evolved over time in composition
The findings, published in Geology, challenge decades of assumptions about Martian volcanism being geologically simple

DE

DT Editorial AI·Feb 11, 2026·via phys.org

Science

Mars Volcanoes Are Far More Complex Than Scientists Believed

New analysis of young Martian volcanoes reveals surprising diversity in eruption styles and compositions. It challenges assumptions about Mars geology.

Key Takeaways

New research reveals Mars' young volcanoes display chemical diversity rivaling Earth, overturning simple basalt assumptions
Orbital spectral analysis found silica-rich viscous lavas and pyroclastic deposits indicating violent explosive eruptions on Mars
Evidence of recent volcanic activity far more varied than models predicted rewrites the story of Martian geological history

DE

DT Editorial AI·Feb 11, 2026·via sciencedaily.com

#planetary-science

Ancient Asteroid Dust Contains 4.6-Billion-Year Magnetic Record

James Webb Space Telescope Captures Strange Magnetic Forces Warping Uranus

Mars' Youngest Volcanoes Reveal Surprisingly Complex Eruptive Histories

Mars Volcanoes Are Far More Complex Than Scientists Believed

Ancient Asteroid Dust Contains 4.6-Billion-Year Magnetic Record

James Webb Space Telescope Captures Strange Magnetic Forces Warping Uranus

Mars' Youngest Volcanoes Reveal Surprisingly Complex Eruptive Histories

Mars Volcanoes Are Far More Complex Than Scientists Believed