New research shows how the Sun's magnetic field can shift when it approaches Earth, which can throw off space weather forecasts.
unsolved mysteries
Posted inResearch Spotlights
Plasma Waves Pinpointed at the Site of Magnetic Reconnection
When the Earth's and the Sun's magnetic fields meet, they realign in explosive and mysterious reconnections. Data suggest that plasma waves called kinetic Alfvén waves play a key role.
Posted inResearch Spotlights
How Mars Got Its Layered North Polar Cap
Orbital wobbling shaped the dome of ice and dust at the planet's north pole.
Posted inNews
The Curious Case of Titan’s Missing Clouds
Two instruments, one region on Titan: One instrument saw clouds, the other didn't—what's going on?
Posted inNews
Freezing Mars's Core—in the Lab
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.
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.