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unsolved mysteries

Photo of a scientific raft used to extract sediment cores from Caldeirao Lake on Corvo Island, Azores.
Posted inNews

Sediments Suggest Vikings May Have Been the First to Settle the Azores

by Santiago Flórez 4 January 20224 October 2022

A multidisciplinary team studying lake sediments and climate change found evidence that the archipelago was inhabited 700 years earlier than historical sources claim.

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.

A small flock of sheep graze by the water’s edge in the Faroe Islands.
Posted inNews

Ancient Eruptions Reveal Earliest Settlers on the Faroe Islands

by Freda Kreier 16 December 202120 December 2021

Lake sediment is helping scientists resolve a decades-long historical mystery.

Posted inNews

Misión a Venus podría ayudar a resolver un misterio atmosférico

by Jaime Cordova 16 December 202116 December 2021

La recientemente anunciada misión DAVINCI+ a Venus de la NASA investigará la atmósfera del planeta, esperando proporcionar información sobre los desconocidos parches oscuros que rodean dicho planeta.

An image of lava reaching the surface at night during the eruption on La Palma, Canary Islands
Posted inNews

Identifying an Eruption “Tipping Point” in Hot Spot Volcanoes

Kate Wheeling, freelance science writer by Kate Wheeling 15 November 20211 August 2022

By analyzing lava samples, researchers show how chemical processes that occur during magma’s ascent to the surface may contribute to a volcano’s eruptible state.

Room full of computer servers, as far as the eye can see
Posted inNews

Accurate Simulation of Sun’s Rotation Might Illuminate Solar Cycle

Tim Hornyak, Science Writer by Tim Hornyak 8 November 202127 March 2023

Scientists have known for 400 years about a particularity in the way the Sun rotates. It took the world’s most powerful supercomputer to accurately simulate it.

A rock balances on a thin leg of ice.
Posted inENGAGE, News

An Explanation, at Last, for Mysterious “Zen Stones”

Katherine Kornei, Science Writer by Katherine Kornei 2 November 202120 September 2023

Laboratory experiments re-create the thin, icy pedestals that support some rocks in nature, revealing that sublimation plays a key role in the formation of these rare and beautiful structures.

Image of a canyon in the Cerberus Fossae region on Mars. One side of the canyon is in shadow, whereas the other is brightly illuminated.
Posted inNews

Summer Could Be Earthquake Season on Mars

by Elise Cutts 1 November 202129 June 2022

InSight data hint that shifting carbon dioxide ice loads, illumination changes, or solar tides could drive an uptick in marsquakes during northern summer—a “marsquake season.”

The location of Jupiter’s northern aurorae, as seen by the Hubble Space Telescope
Posted inResearch Spotlights

Could Low-Altitude Reconnection Power Jupiter’s Polar Aurorae?

by Morgan Rehnberg 21 September 202118 July 2023

Magnetic reconnection events less than 2 Jovian radii above the planet’s cloud tops could explain why Juno has yet to observe a source for Jupiter’s polar aurore.

Four-image figure showing different sequences of the DAVINCI+ mission to Venus
Posted inNews

Mission to Venus Could Help Solve an Atmospheric Mystery

by Jaime Cordova 17 September 202118 January 2022

NASA’s recently announced DAVINCI+ mission to Venus will probe the planet’s atmosphere, hoping to shed light on the unknown dark patches that surround the planet.

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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

Students Enable Widespread Water Monitoring in India

20 July 202620 July 2026
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Southeast Tibet Grew in Pulses, Not All at Once

21 July 202621 July 2026
Editors' Vox

Small-Scale Indian Ocean Dynamics Underpin Marine Ecology and Climate

4 June 20263 June 2026
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