Tech

Scientists use seismic noise to image first hundred meters of Mars

Enlarge / InSight places a wind shield over its seismometer. (credit: NASA/JPL-Caltech) NASA’s InSight lander installed a seismograph on Mars, and the marsquakes it detected have helped us map the planet’s interior. This data provides the big picture of Mars’ internals—how big the core is, whether anything is molten, and so on. But it doesn’t […]

Tech

Red planet has a big core, complex crust

Enlarge / Some seismic waves bounce off Mars’ core before reaching the InSight lander. (credit: Chris Bickel / Science ) We’ve learned a lot about our planet’s interior simply by tracking how the seismic energy released by earthquakes moves through or reflects off the different layers present beneath Earth’s surface. For over a Martian year, […]

Tech

NASA extends Juno, turning spacecraft into an Io, Europa, and Ganymede explorer

Enlarge / NASA’s Juno spacecraft soared directly over Jupiter’s south pole when JunoCam acquired this image on February 2, 2017. (credit: NASA/JPL-Caltech/SwRI/MSSS/John Landino) NASA has announced that it will extend the missions for two of its interplanetary explorers launching during the last decade—the Juno spacecraft orbiting Jupiter and the InSight lander on the surface of […]