Pesquisando por: "Saturn's rings, Cassini image" - Fotoarena - Agência de fotojornalismo

20230530_zia_c218_072 May 30, 2023, United States: This image shows: This image shows Enceladus from the Cassini spacecraft....A remarkable 6,000 water vapor plume has been discovered coming from Saturnâ??s moon Enceladus..The plume, which spans more than 6,000 miles â?? nearly the distance from Los Angeles, California to Buenos Aires, Argentina â?? has been detected by researchers using NASAâ??s James Webb Space Telescope. Not only is this the first time such a water emission has been seen over such an expansive distance, but Webb is also giving scientists a direct look, for the first time, at how this emission feeds the water supply for the entire system of Saturn and its rings..Enceladus, an ocean world about four percent the size of Earth, just 313 miles across, is one of the most exciting scientific targets in our solar system in the search for life beyond Earth. Sandwiched between the moonâ??s icy outer crust and its rocky core is a global reservoir of salty water. Geyser-like volcanos spew jets of ice particles, water vapor, and organic chemicals out of crevices in the moonâ??s surface informally called â??tiger stripes.â??.Previously, observatories have mapped jets hundreds of miles from the moonâ??s surface, but Webbâ??s exquisite sensitivity reveals a new story..â??When I was looking at the data, at first, I was thinking I had to be wrong. It was just so shocking to detect a water plume more than 20 times the size of the moon,â? said lead author Geronimo Villanueva of NASAâ??s Goddard Space Flight Center in Greenbelt, Maryland. â??The water plume extends far beyond its release region at the southern pole.â?.The length of the plume was not the only characteristic that intrigued researchers. The rate at which the water vapor is gushing out, about 79 gallons per second, is also particularly impressive. At this rate, you could fill an Olympic-sized swimming pool in just a couple of hours. In compar (Credit Imag

20230530_zia_c218_071 May 30, 2023, United States: This image shows: In this image, NASAâ??s James Webb Space Telescope shows a water vapor plume jetting from the southern pole of Saturnâ??s moon Enceladus, extending out 20 times the size of the moon itself. The inset, an image from the Cassini orbiter, emphasizes how small Enceladus appears in the Webb image compared to the water plume...A remarkable 6,000 water vapor plume has been discovered coming from Saturnâ??s moon Enceladus..The plume, which spans more than 6,000 miles â?? nearly the distance from Los Angeles, California to Buenos Aires, Argentina â?? has been detected by researchers using NASAâ??s James Webb Space Telescope. Not only is this the first time such a water emission has been seen over such an expansive distance, but Webb is also giving scientists a direct look, for the first time, at how this emission feeds the water supply for the entire system of Saturn and its rings..Enceladus, an ocean world about four percent the size of Earth, just 313 miles across, is one of the most exciting scientific targets in our solar system in the search for life beyond Earth. Sandwiched between the moonâ??s icy outer crust and its rocky core is a global reservoir of salty water. Geyser-like volcanos spew jets of ice particles, water vapor, and organic chemicals out of crevices in the moonâ??s surface informally called â??tiger stripes.â??.Previously, observatories have mapped jets hundreds of miles from the moonâ??s surface, but Webbâ??s exquisite sensitivity reveals a new story..â??When I was looking at the data, at first, I was thinking I had to be wrong. It was just so shocking to detect a water plume more than 20 times the size of the moon,â? said lead author Geronimo Villanueva of NASAâ??s Goddard Space Flight Center in Greenbelt, Maryland. â??The water plume extends far beyond its release region at the southern pole.â?.The length of the plume was (C

20230530_zia_c218_075 May 30, 2023, United States: This image shows: This image shows Enceladus from the Cassini spacecraft...A remarkable 6,000 water vapor plume has been discovered coming from Saturnâ??s moon Enceladus..The plume, which spans more than 6,000 miles â?? nearly the distance from Los Angeles, California to Buenos Aires, Argentina â?? has been detected by researchers using NASAâ??s James Webb Space Telescope. Not only is this the first time such a water emission has been seen over such an expansive distance, but Webb is also giving scientists a direct look, for the first time, at how this emission feeds the water supply for the entire system of Saturn and its rings..Enceladus, an ocean world about four percent the size of Earth, just 313 miles across, is one of the most exciting scientific targets in our solar system in the search for life beyond Earth. Sandwiched between the moonâ??s icy outer crust and its rocky core is a global reservoir of salty water. Geyser-like volcanos spew jets of ice particles, water vapor, and organic chemicals out of crevices in the moonâ??s surface informally called â??tiger stripes.â??.Previously, observatories have mapped jets hundreds of miles from the moonâ??s surface, but Webbâ??s exquisite sensitivity reveals a new story..â??When I was looking at the data, at first, I was thinking I had to be wrong. It was just so shocking to detect a water plume more than 20 times the size of the moon,â? said lead author Geronimo Villanueva of NASAâ??s Goddard Space Flight Center in Greenbelt, Maryland. â??The water plume extends far beyond its release region at the southern pole.â?.The length of the plume was not the only characteristic that intrigued researchers. The rate at which the water vapor is gushing out, about 79 gallons per second, is also particularly impressive. At this rate, you could fill an Olympic-sized swimming pool in just a couple of hours. In compari (Credit Imag

20230330_zia_c218_049 March 30, 2023, United States: Saturn's huge ring system is heating the giant planet's upper atmosphere. The phenomenon has never before been seen in the solar system. It's an unexpected interaction between Saturn and its rings that potentially could provide a tool for predicting if planets around other stars have glorious Saturn-like ring systems, too..The secret has been hiding in plain view for 40 years. But it took the insight of a veteran astronomer to pull it all together within a year, using observations of Saturn from NASA's Hubble Space Telescope and retired Cassini probe, in addition to the Voyager 1 and 2 spacecraft and the retired International Ultraviolet Explorer mission..The telltale evidence is an excess of ultraviolet radiation, seen as a spectral line of hot hydrogen in Saturn's atmosphere. The bump in radiation means that something is contaminating and heating the upper atmosphere from the outside..The most feasible explanation is that icy ring particles raining down onto Saturn's atmosphere cause this heating. This could be due to the impact of micrometeorites, solar wind particle bombardment, solar ultraviolet radiation, or electromagnetic forces picking up electrically charged dust. All this happens under the influence of Saturn's gravitational field pulling particles into the planet. When NASA's Cassini probe plunged into Saturn's atmosphere at the end of its mission in 2017, it measured the atmospheric constituents and confirmed that many particles are falling in from the rings..''Though the slow disintegration of the rings is well known, its influence on the atomic hydrogen of the planet is a surprise. From the Cassini probe, we already knew about the rings' influence. However, we knew nothing about the atomic hydrogen content,'' said Lotfi Ben-Jaffel of the Institute of Astrophysics in Paris and the Lunar & Planetary Laboratory, University of Arizona, author of (Credit Image: © Cover Images/Zuma Press/Fotoarena)

20230319_zia_c218_011 March 19, 2023, United States: This image shows: The colourful globe of Saturn's largest moon, Titan, passes in front of the planet and its rings in this true colour snapshot from NASA's Cassini spacecraft...NASA has revealed a craft that will help scientists discover new information about the chemistry of Saturnâ??s moon Titan..The space agencyâ??s mission to Saturnâ??s giant moon is due to launch in 2027. When it arrives in the mid-2030s, it will begin a journey of discovery that could bring about a new understanding of the development of life in the universe. .This mission, called Dragonfly, will carry an instrument called the Dragonfly Mass Spectrometer (DraMS), designed to help scientists hone in on the chemistry at work on Titan. It may also shed light on the kinds of chemical steps that occurred on Earth that ultimately led to the formation of life, called prebiotic chemistry..Titan's abundant complex carbon-rich chemistry, interior ocean, and past presence of liquid water on the surface make it an ideal destination to study prebiotic chemical processes and the potential habitability of an extraterrestrial environment..DraMS will allow scientists back on Earth to remotely study the chemical makeup of the Titanian surface. .â??We want to know if the type of chemistry that could be important for early pre-biochemical systems on Earth is taking place on Titan,â? explains Dr. Melissa Trainer of NASAâ??s Goddard Space Flight Center, Greenbelt, Maryland..Trainer is a planetary scientist and astrobiologist who specializes in Titan and is one of the Dragonfly missionâ??s deputy principal investigators. She is also lead on the DraMS instrument, which will scan through measurements of samples from Titanâ??s surface material for evidence of prebiotic chemistry..To accomplish this, the Dragonfly robotic rotorcraft will capitalize on Titanâ??s low gravity and dense atmosphere to fly between (Credit Image: © Cover Images via ZU