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NASA’s InSight lander detected seismic waves from a meteoroid and was able to capture the sound of the space rock striking the surface of Mars for the first time. The meteoroid – the term used for incoming space rocks before they hit the ground – entered Mars’ atmosphere on Sept. 5, 2021, exploding into at least three shards that each left craters behind. Mars’ atmosphere is just 1% as dense as Earth’s, allowing far more meteoroids to pass through and impact the Red Planet’s surface. This event marks the first time seismic and acoustic waves from an impact were detected on the Red Planet. Why does this meteoroid impact sound like a “bloop” in the video? It has to do with a peculiar atmospheric effect that’s also observed in deserts on Earth. After sunset, the atmosphere retains some heat accumulated during the day. Sound waves travel through this heated atmosphere at different speeds, depending on their frequency. As a result, lower-pitched sounds arrive before high-pitched sounds. An observer close to the impact would hear a “bang,” while someone many miles away would hear the bass sounds first, creating a “bloop.” NASA’s Mars Reconnaissance Orbiter flew over the estimated impact site to confirm the location. The orbiter used its black-and-white Context Camera to reveal three darkened spots on the surface. After locating these spots, the orbiter’s team used the High-Resolution Imaging Science Experiment camera, or HiRISE, to get a color close-up of the craters. Because HiRISE sees wavelengths the human eye can’t detect, scientists change the camera’s filters to enhance the color of the image. The areas that appear blue around the craters are where dust has been removed or disturbed by the blast of the impact. Martian dust is bright and red, so removing it makes the surface appear relatively dark and blue. For more information on InSight, visit https://mars.nasa.gov/insight. Credit: NASA/JPL-Caltech/University of Maryland/University of Arizona/CNES/IPGP/Manchu/Bureau 21/ETH Zurich/Kirschner/van Driel

NASA’s Double Asteroid Redirection Test, also known as DART, is humanity’s first attempt to change the motion of a non-hazardous asteroid in space by intentionally crashing a spacecraft into it. After impact, ground-based observatories across the globe will turn their eyes to the skies to determine if this planetary defense test was successful. In this video, NASA visits Lowell Observatory to learn more about how astronomers have been tracking this double asteroid over the course of many years, and how they will document the orbital change post-impact. DART is a spacecraft designed to impact an asteroid as a test of technology. DART’s target asteroid is NOT a threat to Earth. This asteroid system is a perfect testing ground to see if intentionally crashing a spacecraft into an asteroid is an effective way to change its course, should a hazardous asteroid be discovered in the future. For more on DART, visit https://nasa.gov/dart. Credit: NASA

The journey of half a million miles – the first flight of the Artemis Generation – is about to begin. The uncrewed Artemis I mission will jump-start humanity’s return to the Moon with the thunderous liftoff of NASA’s powerful new Space Launch System rocket and Orion spacecraft. This critical flight test will send Orion farther than any human-rated spacecraft has ever flown, putting new systems and processes to the test and lighting the way for the crew missions to come. Artemis I is ready for departure – and, together with our partners around the world, we are ready to return to the Moon, with our sights on Mars and beyond. Learn more: https://nasa.gov/specials/artemis-i Producer: Lisa Allen, Barbara Zelon, Alysia Lee Writer & Director: Paul Wizikowski

There may not be any humans aboard NASA's #Artemis I flight test, but there will be a special canine: Snoopy! Learn why Astronaut Snoopy is flying to space when Artemis launches on its historic mission around the Moon and back. Artemis I is the first integrated flight test of the Space Launch System rocket that will send the uncrewed Orion spacecraft around the Moon and back to Earth. The mission will check out all spacecraft systems for the first time before crew fly aboard Artemis II. It's one more step toward taking the next giant leap: sending the first astronauts to Mars. Get all the info on this historic mission: https://nasa.gov/specials/artemis-i The history of Snoopy and NASA: https://go.nasa.gov/3cNgB65 Producers: Scott Bednar, Jessica Wilde, Sami Aziz Videographer: Ben Smegelsky Credit: NASA

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