Studies since 2018 have provided competing explanations of bright radar reflections from the base of the south polar ice cap.
planetary surfaces
Posted inEditors' Highlights
Insights from Calibration of the HP³ Radiometer on InSight
A detailed analysis of Heatflow and Physical Properties Package Radiometer on the Mars InSight lander, including changing instrument sensitivity and calibration coefficients.
Posted inResearch Spotlights
Local Heat Source Needed to Form Liquid Water Lake on Mars
Thermal modeling suggests that active magmatism in the past few hundred thousand years could account for the presence of a large lake previously hypothesized beneath the Red Planet’s southern ice cap.
Posted inNews
Tsunamis Splashed Ancient Mars
Massive meteorites likely slammed into a Martian ocean billions of years ago, unleashing tsunami waves up to 120 meters tall, a close study of a region of the Red Planet's terrain has found.
Posted inResearch Spotlights
Objects That Slam into Ceres Remain on Its Surface
Hypervelocity impact experiments shed new light on the composition and evolution of the largest dwarf planet's little-known surface.