Mercury May Have Harbored an Ancient Magma Ocean
Massive Lava Flows May Have Given Rise to Two Distinct Rock Types
Massachusetts Institute of Technology said:
The scientists analyzed data gathered by MESSENGER (MErcury Surface, Space ENvironment, GEochemistry, and Ranging), a NASA probe that has orbited the planet since March 2011. Later that year, a group of scientists analyzed X-ray fluorescence data from the probe, and identified two distinct compositions of rocks on the planet’s surface. The discovery unearthed a planetary puzzle: What geological processes could have given rise to such distinct surface compositions?