Tag: Planetary Science

  • Europe’s ExoMars orbiter nears start of methane-sniffing science mission

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    Artist’s concept of the ExoMars Trace Gas Orbiter during aerobraking at Mars. Credit: ESA/ATG medialab Nearly a year-and-a-half after arriving at the red planet, Europe’s ExoMars orbiter is finally approaching a planned perch around 250 miles over the rust-colored world after repeatedly dipping into the Martian atmosphere to lower its orbit. The end of a…

  • Saturn’s night side caught in “ringshine”

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    A patch of Saturn’s atmosphere was captured in this view from Cassini’s wide-angle camera on Sept. 14, 2017. Credit: NASA/JPL-Caltech/Space Science Institute In the final hours of its pioneering mission, NASA’s Cassini spacecraft opened its cameras to gaze down on Saturn, recording views of a nighttime cloudscape illuminated by sunlight reflected off countless tiny ice…

  • Juno’s latest imagery from Jupiter

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    This image of Jupiter’s swirling south polar region was captured by NASA’s Juno spacecraft as it neared completion of its tenth close flyby of the gas giant planet on Dec. 16, 2017. Citizen scientist Gerald Eichstädt processed this image using data from the JunoCam imager. Credit: NASA/JPL-Caltech/SWRI/Gerald Eichstädt NASA’s Juno spacecraft, now on its 11th…

  • Plot thickens as New Horizons moves within year of next flyby

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    Artist’s concept of the New Horizons spacecraft’s flyby of 2014 MU69. Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute/Steve Gribben The final days before NASA’s New Horizons probe barrels in on its next destination on Jan. 1, 2019, should prove eventful, with scientists trying to sort out whether a distant mini-world detected by the…

  • Cassini’s farewell to Saturn

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    Cassini’s wide-angle camera recorded 80 images in just over two hours on Sept. 13 for a final full mosaic of Saturn. This view includes 42 of those images taken in red, green and blue spectral filters to create a natural color mosaic. Six of Saturn’s moons — Enceladus, Epimetheus, Janus, Mimas, Pandora and Prometheus —…

  • Scientists suggest streaks on Martian hillsides are dry flows

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    This inner slope of a Martian crater has several of the seasonal dark streaks called “recurrent slope lineae,” or RSL, that a November 2017 report interprets as granular flows, rather than darkening due to flowing water. The image is from the HiRISE camera on NASA’s Mars Reconnaissance Orbiter. Credits: NASA/JPL-Caltech/UA/USGS Intermittent flows that appear on…

  • NASA confirms contribution to Japanese-led Mars mission

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    Artist’s concept of the MMX spacecraft at Phobos. Credit: JAXA/NASA NASA announced Thursday it will fund development of a scientific instrument that will fly on Japan’s Martian Moons Exploration mission, a robotic probe set for launch in 2024 to bring back the first samples from Mars’ largest moon Phobos. A neutron and gamma-ray spectrograph developed…

  • Engineers hopeful Mars rover’s drill can return to service

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    File photo of the Curiosity rover’s turret of tools at the end of its robotic arm, as seen shortly after its landing on Mars in August 2012. Credit: NASA/JPL-Caltech Engineers have started testing a new way to use the Curiosity rover’s drill to bore into Martian rocks after a motor in the device stalled late…

  • NASA’s Dawn mission gears up for close look at Ceres

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    This artist concept shows NASA’s Dawn spacecraft above dwarf planet Ceres, as seen in images from the mission. Credits: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA NASA’s Dawn spacecraft will remain at Ceres for the rest of its mission, heading closer to the asteroid belt’s largest resident than ever before to obtain new measurements of ice, salts and a tenuous intermittent…

  • Cassini results still keeping scientists busy

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    Cassini took this image of Saturn in April 2016 from a distance of approximately 1.9 million miles (3 million kilometers). Credit: NASA/JPL-Caltech/Space Science Institute Scientists examining data from the Cassini mission’s final months reported this week unexpected measurements of Saturn’s gravity field and outer atmosphere, suggesting they may have to revisit theories about the planet’s…