https://phys.org/ en-us Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. Around 4 billion years ago, an asteroid hit the Jupiter moon Ganymede. Now, a Kobe University researcher has realized that the solar system's biggest moon's axis has shifted as a result of the impact, which confirmed that the asteroid was around 20 times larger than the one that ended the age of the dinosaurs on Earth, and caused one of the biggest impacts with clear traces in the solar system. https://phys.org/news/2024-09-gigantic-asteroid-impact-shifted-axis.html Planetary Sciences Tue, 03 Sep 2024 05:00:02 EDT news644511361 Data collected by NASA's Juno mission indicates a briny past may be bubbling to the surface on Jupiter's largest moon. https://phys.org/news/2023-10-salts-ganymede-surface-nasa-juno.html Astronomy Tue, 31 Oct 2023 05:51:18 EDT news617950270 Nature doesn't conform to our ideas of neatly-contained categories. Many things in nature blur the lines we try to draw around them. That's true of Jupiter's moon Ganymede, the largest moon in the solar system https://phys.org/news/2023-10-jwst-jupiter-moon-ganymede.html Astronomy Fri, 27 Oct 2023 12:26:04 EDT news617628361 An international team of space scientists has found evidence that hydrogen peroxide on Ganymede, Jupiter's largest moon, exists only on its higher latitudes. For their research, reported in the journal Science Advances, the group studied data from the James Webb Space Telescope (JWST). https://phys.org/news/2023-07-hydrogen-peroxide-jupiter-moon-ganymede.html Planetary Sciences Mon, 24 Jul 2023 10:20:01 EDT news609412214 A critical antenna is jammed on a Jupiter-bound spacecraft launched two weeks ago, the European Space Agency reported Friday. https://phys.org/news/2023-04-key-radar-antenna-stuck-europe.html Space Exploration Fri, 28 Apr 2023 18:08:57 EDT news601924124 Could vast, long-hidden oceans be teeming with alien life in our very own Solar System? https://phys.org/news/2023-04-alien-life-jupiter-icy-moons.html Planetary Sciences Wed, 12 Apr 2023 04:25:10 EDT news600492300 In June 2021, NASA's Juno spacecraft flew close to Ganymede, Jupiter's largest moon, observing evidence of magnetic reconnection. A team led by Southwest Research Institute used Juno data to examine the electron and ion particles and magnetic fields as the magnetic field lines of Jupiter and Ganymede merged, snapped and reoriented, heating and accelerating the charged particles in the region. https://phys.org/news/2023-01-scientists-evidence-magnetic-reconnection-ganymede.html Astronomy Tue, 10 Jan 2023 14:27:03 EST news592583221 After revealing a trove of details about the moons Ganymede and Europa, the mission to Jupiter is setting its sights on sister moon Io. https://phys.org/news/2022-12-nasa-juno-exploring-jovian-moons.html Planetary Sciences Wed, 14 Dec 2022 16:01:04 EST news590256061 The cocktail of chemicals that make up the frozen surfaces on two of Jupiter's largest moons are revealed in the most detailed images ever taken of them by a telescope on Earth. https://phys.org/news/2022-10-sharpest-earth-based-images-europa-ganymede.html Planetary Sciences Mon, 10 Oct 2022 12:12:34 EDT news584622750 On November 8, 2020, NASA's Juno spacecraft flew through an intense beam of electrons traveling from Ganymede, Jupiter's largest moon, to its auroral footprint on the gas giant. Southwest Research Institute scientists used data from Juno's payload to study the particle population traveling along the magnetic field line connecting Ganymede to Jupiter while, at the same time, remotely sensing the associated auroral emissions to unveil the mysterious processes creating the shimmering lights. https://phys.org/news/2022-04-scientists-dots-galilean-moon-auroral.html Astronomy Tue, 05 Apr 2022 11:44:04 EDT news568377840 The spacecraft used its infrared instrument during recent flybys of Jupiter's mammoth moon to create this latest map, which comes out a decade after Juno's launch. https://phys.org/news/2021-08-nasa-juno-celebrates-years-infrared.html Space Exploration Fri, 06 Aug 2021 09:49:50 EDT news547462187 For the first time, astronomers have uncovered evidence of water vapor in the atmosphere of Jupiter's moon Ganymede. This water vapor forms when ice from the moon's surface sublimates—that is, turns from solid to gas. https://phys.org/news/2021-07-hubble-evidence-vapor-jupiter-moon.html Astronomy Mon, 26 Jul 2021 12:53:02 EDT news546522772 On June 7, 2021, NASA's Juno spacecraft flew closer to Jupiter's ice-encrusted moon Ganymede than any spacecraft in more than two decades. Less than a day later, Juno made its 34th flyby of Jupiter, racing over its roiling atmosphere from pole to pole in less than three hours. Using the spacecraft's JunoCam imager, the mission team has put together an animation to provide a "starship captain" point of view of each flyby. https://phys.org/news/2021-07-juno-flies-solar-biggest-moon.html Planetary Sciences Wed, 14 Jul 2021 14:44:22 EDT news545492652 NASA's Juno spacecraft has provided the first close-ups of Jupiter's largest moon in two decades. https://phys.org/news/2021-06-spacecraft-jupiter-mega-moon-1st.html Space Exploration Wed, 09 Jun 2021 03:38:48 EDT news542428723 Jupiter's moon Ganymede is the largest planetary satellite in the solar system. It's also one of the most intriguing: Ganymede is the only moon with its own magnetic field, it is the most differentiated of all moons, and it likely possesses a subsurface ocean of liquid water. It was studied by the early Jupiter flybys made by the Pioneer and Voyager spacecraft, but our understanding today rests largely on observations made by NASA's Galileo orbiter from 1995 to 2003. https://phys.org/news/2021-01-juno-ice-northern-ganymede.html Space Exploration Thu, 21 Jan 2021 07:41:51 EST news530437305 Researchers from Kobe University and the National Institute of Technology, Oshima College have conducted a detailed reanalysis of image data from Voyager 1, 2 and Galileo spacecraft in order to investigate the orientation and distribution of the ancient tectonic troughs found on Jupiter's moon Ganymede. They discovered that these troughs are concentrically distributed across almost the entire surface of the satellite. This global distribution indicates that these troughs may be actually part of one giant crater covering Ganymede. https://phys.org/news/2020-08-huge-ring-like-ganymede-surface-violent.html Space Exploration Fri, 07 Aug 2020 10:41:04 EDT news516015660 On its way inbound for a Dec. 26, 2019, flyby of Jupiter, NASA's Juno spacecraft flew in the proximity of the north pole of the ninth-largest object in the solar system, the moon Ganymede. The infrared imagery collected by the spacecraft's Jovian Infrared Auroral Mapper (JIRAM) instrument provides the first infrared mapping of the massive moon's northern frontier. https://phys.org/news/2020-07-nasa-juno-images-jovian-moon.html Space Exploration Fri, 24 Jul 2020 09:12:24 EDT news514800743 ESA's Jupiter Icy Moons Explorer, Juice, is set to embark on a seven-year cruise to Jupiter starting May 2022. The mission will investigate the emergence of habitable worlds around gas giants and the Jupiter system as an archetype for the numerous giant planets now known to orbit other stars. https://phys.org/news/2019-02-video-jupiter-odyssey.html Space Exploration Wed, 06 Feb 2019 08:46:36 EST news468665189 Space Shuttle Atlantis deployed the Galileo spacecraft six hours, 30 minutes into the flight on Oct. 18, 1989. In this image, Galileo, mounted atop the inertial upper stage, is tilted to a 58-degree deployment position in Atlantis's payload bay with the Earth's limb appearing in the background. https://phys.org/news/2018-10-image-galileo-mission.html Space Exploration Fri, 19 Oct 2018 07:50:02 EDT news459153824 A recently published study led by researchers at the University of Hawai'i at Manoa School of Ocean and Earth Science and Technology reveals Ganymede, an icy moon of Jupiter, appears to have undergone complex periods of geologic activity, specifically strike-slip tectonism, as is seen in Earth's San Andreas fault. This is the first study to exhaustively consider the role of strike-slip tectonism in Ganymede's geologic history. https://phys.org/news/2018-10-icy-moon-jupiter-ganymede-evidence.html Space Exploration Wed, 10 Oct 2018 12:13:12 EDT news458392377 Far across the solar system, from where Earth appears merely as a pale blue dot, NASA's Galileo spacecraft spent eight years orbiting Jupiter. During that time, the hearty spacecraft—slightly larger than a full-grown giraffe—sent back spates of discoveries on the gas giant's moons, including the observation of a magnetic environment around Ganymede that was distinct from Jupiter's own magnetic field. The mission ended in 2003, but newly resurrected data from Galileo's first flyby of Ganymede is yielding new insights about the moon's environment—which is unlike any other in the solar system. https://phys.org/news/2018-04-fresh-results-nasa-galileo-spacecraft.html Space Exploration Mon, 30 Apr 2018 12:34:24 EDT news444310308 It may still be five years away from launch, and over a decade before our Jupiter Icy Moons Explorer reaches the gas giant and its icy moons, but preparations are well under way. This new artist's impression depicts the final spacecraft design, the construction of which is being overseen by Airbus Defence and Space. https://phys.org/news/2017-07-juicethe-jupiter-icy-moons-explorer.html Space Exploration Mon, 17 Jul 2017 08:09:33 EDT news419497764 In 1610, Galileo Galilei looked up at the night sky through a telescope of his own design. Spotting Jupiter, he noted the presence of several "luminous objects" surrounding it, which he initially took for stars. In time, he would notice that these "stars" were orbiting the planet, and realized that they were in fact Jupiter's moons – which would come to be named Io, Europa, Ganymede and Callisto. https://phys.org/news/2015-10-jupiter-moon-ganymede.html Space Exploration Fri, 16 Oct 2015 09:20:01 EDT news364203470 (Phys.org)—A pair of space scientists, one with the Lunar and Planetary Institute in Houston Texas the other with Washington University in St. Lois, has found evidence of a large bulge on Ganymede—the largest satellite in our solar system. In their presentation at this year's Lunar and Planetary Science Conference, Paul Schenk and William McKinnon outlined what they had observed and offered possible explanations for the existence of the bulge. As noted by National Geographic, the bulge, or protuberance, is approximately the size of Ecuador and about half the height of Mount Kilimanjaro. https://phys.org/news/2015-04-jupiter-moon-ganymede-large-bulge.html Space Exploration Thu, 02 Apr 2015 11:56:41 EDT news347194593 NASA's Hubble Space Telescope has the best evidence yet for an underground saltwater ocean on Ganymede, Jupiter's largest moon. The subterranean ocean is thought to have more water than all the water on Earth's surface. https://phys.org/news/2015-03-hubble-underground-ocean-jupiter-largest.html Space Exploration Thu, 12 Mar 2015 12:50:33 EDT news345383426 Processes that shaped the ridges and troughs on the surface of Jupiter's icy moon Ganymede are likely similar to tectonic processes seen on Earth, according to a team of researchers led by Southwest Research Institute (SwRI). To arrive at this conclusion, the team subjected physical models made of clay to stretching forces that simulate tectonic action. The results were published in Geophysical Research Letters. https://phys.org/news/2014-07-laboratory-jupiter-moon-surface.html Space Exploration Tue, 08 Jul 2014 12:49:33 EDT news324042552 (Phys.org) —The largest moon in our solar system, a companion to Jupiter named Ganymede, might have ice and oceans stacked up in several layers like a club sandwich, according to new NASA-funded research that models the moon's makeup. https://phys.org/news/2014-05-ganymede-harbor-club-sandwich-oceans.html Space Exploration Thu, 01 May 2014 16:20:27 EDT news318179997 (Phys.org) —Scientists, including Brown University geologists and students, have completed the first global geological map of Ganymede, Jupiter's largest moon and the largest in the solar system. https://phys.org/news/2014-02-global-jupiter-largest-moon-ganymede.html Space Exploration Wed, 12 Feb 2014 16:04:15 EST news311443409 (Phys.org) —Jupiter's moon Io is the most volcanically active world in the Solar System, with hundreds of volcanoes, some erupting lava fountains up to 250 miles high. However, concentrations of volcanic activity are significantly displaced from where they are expected to be based on models that predict how the moon's interior is heated, according to NASA and European Space Agency researchers. https://phys.org/news/2013-04-scientists-io-volcanoes-wrong.html Space Exploration Thu, 04 Apr 2013 15:51:03 EDT news284309455 NASA has selected key contributions to a 2022 European Space Agency (ESA) mission that will study Jupiter and three of its largest moons in unprecedented detail. The moons are thought to harbor vast water oceans beneath their icy surfaces. https://phys.org/news/2013-02-nasa-jpl-contribute-european-jupiter.html Space Exploration Fri, 22 Feb 2013 08:31:28 EST news280744281