Laboratory experiments and geochemical model suggest that chlorate is very effective to oxidize reducing iron to reddish iron oxides on Mars when liquid water was present on the surface.Read More »
New observations confirm that main asteroid belt object Hygiea is round. It now fulfills all the requirements to graduate from asteroid to dwarf planet.Read More »Planetary Sciences
An air-sampling study has captured long-term trends in the concentrations of five key atmospheric gases for the first time.Read More »Planetary Sciences
Aurorae once classified by human eyes are now being sorted by machines. The change may help astronomers understand how the mysterious features are powered.Read More »Planetary Sciences
Electrons energized and trapped at Mars were thought to lose energy inside the planet’s magnetosheath, but new research suggests a different explanation of spacecraft data.Read More »Geology & Geophysics
Insights from a new study could spark discoveries about Martian landscapes and also help researchers get to the bottom of canyon formation here on Earth.Read More »Planetary Sciences
The spacecraft crossed the solar system’s edge at a different spot and in a different solar season than Voyager 1. Nevertheless, the border looked much the same in both spots.Read More »
New high-pressure experiments on fluid iron suggest thermal convection without compositional buoyancy is sufficient to drive the dynamo generating Earth’s magnetic field.Read More »
