This Week NASA: Critical Preflight Test for Artemis I, DART Planetary Defense, New Webb Images
since the images Voyager 2 captured during its 1989 flyby of the distant planet. Webb also captured seven of Neptune’s 14 known moons including Triton, which orbits Neptune in an unusual retrograde, or backward direction. Additional studies by Webb of both Triton and Neptune are planned in the coming year.
Webb’s first images of Mars, captured by its NIRCam instrument Sept. 5, 2022 [Guaranteed Time Observation Program 1415]. Left: Reference map of the observed hemisphere of Mars from NASA and the Mars Orbiter Laser Altimeter . Top right: NIRCam image showing 2.1-micron reflected sunlight, revealing surface features such as craters and dust layers. Bottom right: Simultaneous NIRCam image showing ~4.
to NASA’s InSight lander. InSight detected seismic waves from four meteoroid impacts on the Red Planet in 2020 and 2021. This includes an impact on September 5, 2021, that made these craters . Not only are these the first impacts detected by InSight’s seismometer since the spacecraft landed in 2018, but they also mark the first time seismic and acoustic waves from an impact have been detected on Mars.
A cropped composite of a DRACO image centered on Jupiter taken during one of SMART Nav’s tests. DART was approximately 16 million miles from Earth when the image was taken, with Jupiter approximately 435 million miles away from the spacecraft. Credit: NASA/Johns Hopkins APL
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