A new study supports the idea of a “helicity barrier” influencing the fluctuating stream of interplanetary plasma.
unsolved mysteries
Posted inNews
Coronal Dimmings Shine Light on Stellar CMEs
Coronal mass ejections from stars have eluded easy observation, so scientists are looking at what’s left behind.
Posted inNews
Million or Billion? Narrowing Down the Age of Mantle Processes in New Guinea
Mantle rocks in Papua New Guinea contain curious geochemical signatures that scientists have traditionally interpreted as evidence of billions-year-old melting. New evidence suggests otherwise.
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Diagnosing Neptune’s Chilly Summer
A pandemic project analyzing a trove of infrared images revealed an unexplained phenomenon taking place in Neptune’s atmosphere.
Posted inFeatures
Is Earth’s Core Rusting?
If subduction carries hydrous minerals deep into Earth’s mantle, they may “rust” the iron outer core, forming vast sinks of oxygen that can later be returned to the atmosphere.
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Hot Springs Suggest How the Tibetan Plateau Became the Roof of the World
Helium isotopes found in water samples provide a snapshot of what lies beneath the plateau and stimulate debate within the geosciences community.
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How a Newly Discovered Mineral Might Explain Weird Mantle Behavior
Scientists not only synthesized davemaoite but deformed it at lower mantle conditions. They found its strength and viscosity to be substantially lower than those of other minerals that make up the lower mantle.
Posted inEditors' Highlights
New Results Deepen the Mystery of Earth’s Early Magnetic Field
How was Earth’s early magnetic field produced? New experimental results and modeling show that the energy source could not have come from exsolution of lithophile elements from the core.
Posted inResearch Spotlights
Tree Rings Reveal a Puzzling Trend in Monsoon Intensity
Tree rings confirm that in northern Australia, the past 40 years have experienced more rain than any similar length of time in the past 600 years.
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Buscando terremotos en la ionosfera
Los terremotos pueden liberar ráfagas de energía eléctrica que se pueden sentir en la ionosfera, a kilómetros por encima de la Tierra. Sin embargo, la teoría sigue siendo controvertida.