How thick is the crust of Mars? This question is what a recent study published in Geophysical Research Letters attempted to answer as it reported on data from a magnitude 4.7 marsquake recorded in May 2022 by NASA’s InSight lander, which remains the largest quake ever recorded on another planetary body. As it turns out, this data helped provide estimates of Mars’ global crustal thickness, along with a unique discovery regarding the crust in the northern and southern hemispheres, and how the interior of Mars produces its heat.Continue reading “Mars Has a Thick Crust. Its Internal Heat Mainly Comes from Radioactivity”
Despite its draining power, NASA’s InSight Mars lander is determined to squeeze as much science as it can until the very last moment
Its solar panels are caked with dust and the batteries are running out of juice, but NASA’s InSight Mars lander continues to soldier forth collecting more science about the Red Planet until its very last beep. To conserve energy, InSight was projected to shut down its seismometer—its last operational science instrument—by the end of June, hoping to survive on its remaining power until December. The seismometer has been the key instrument designed to measure marsquakes, which it has been recording since it touched down on Mars in 2018, and recently recorded a 5.0-magnitude quake, the biggest yet.Continue reading “Despite its draining power, NASA’s InSight Mars lander is determined to squeeze as much science as it can until the very last moment”
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This is the Last Selfie InSight Will Ever Take
Few things in life captivate us more than looking at images from other planets, no matter how dull these images might seem. This is especially true for Mars, as it’s where we’ve sent the most robots to explore its cold and dry surface. The very first image from the surface of Mars in July 1976 was nothing more than the Viking 1 lander’s footpad and some rocks, but no one cared about these mundane details because we were looking at an image from Mars. We were looking at the surface of another world for the first time in human history, and not only were we captivated by it, but we wanted more.Continue reading “This is the Last Selfie InSight Will Ever Take”
Eight Missions are Getting Extensions, Most Exciting: OSIRIS-REx is Going to Asteroid Apophis
NASA has granted mission extensions to eight different planetary missions, citing the continued excellent operations of the spacecraft, but more importantly, the sustained scientific productivity of these missions, “and the potential to deepen our knowledge and understanding of the solar system and beyond.” Each mission will be extended for three more years.
One of the most exciting extensions gives a new mission to the OSIRIS-REx spacecraft, sending it to one of the most infamous asteroids of them all, the potentially hazardous asteroid Apophis.Continue reading “Eight Missions are Getting Extensions, Most Exciting: OSIRIS-REx is Going to Asteroid Apophis”