Mars's core, widely thought to be at least partially molten, may eventually solidify completely, and researchers have turned to lab experiments to find out how.
unsolved mysteries
Posted inResearch Spotlights
Using Isotope Fingerprints to Solve a Methane Mystery
Atmospheric methane levels are rising, and isotopic ratios within the greenhouse gas suggest that the tropics may be to blame.
Posted inNews
Scientists Offer New Explanation for Island's Unexpected Uplift
Researchers developed a new timeline for the rise, fall, and rise again of a puzzling island in the Azores.
Posted inResearch Spotlights
Eliminating Uncertainty One Cloud at a Time
The impact of clouds on climate change has been a scientific mystery for decades. Now researchers are fighting to gain the upper hand.
Posted inResearch Spotlights
No Evidence for Unknown Source of Ozone Precursor
A study suggests that known combustion and photochemical sources of nitrous acid, a precursor to ground-level ozone, are enough to explain levels seen in the atmosphere.
Posted inResearch Spotlights
Jupiter's Auroras Recharge Between Solar Storms
New research suggests that Jupiter's magnetic field replenishes its stock of plasma during lulls in solar activity, creating spectacular displays when a solar storm hits.
Posted inNews
Scientists Solve Charon's Red Mystery
Why are Charon's poles dusted with reddish material?
Posted inNews
A Flip-Flopping Climate Could Explain Mars's Watery Past
A new hypothesis might reconcile two opposing theories that have tried to explain Mars's mysterious history for more than 40 years.
Posted inResearch Spotlights
Mysterious Anomaly Interrupts Stratospheric Wind Pattern
For the first time, scientists have observed a deviation from the typical alternating pattern of easterly and westerly winds in the equatorial stratosphere.
Posted inEditors' Vox
Even the Magnetosphere Has Problems
In a new conference and collection of papers, international space physicists narrow down the enigmas that puzzle magnetospheric science.