Earth’s Moon is Shrinking, New Modeling Study Suggests
Earth’s Moon shrank more than 46 m (150 feet) in circumference as its core gradually cooled over the last few hundred million years, according to a paper published in the…
InSight Finds Evidence for Molten Silicate Layer above Martian Metallic Core
Mars’ liquid iron alloy core is surrounded by a layer of fully molten silicate (magma) about 150 km thick, according to a pair of papers published in the journal Nature.…
InSight’s Largest Marsquake Was Likely Caused by Geological Processes, Study Says
During its time on Mars, NASA’s InSight (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport) lander recorded over 1,300 seismic events, known as marsquakes. Of these, a number were…
InSight Detects Seismic Waves Traveling through Martian Liquid Core
Mars has a liquid iron alloy core at its center. Using seismic data gathered by NASA’s InSight lander, planetary scientists have made the first observations of seismic waves traveling through…