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Bright Moons of Saturn | NASA Cassini Mission
Rhea, Enceladus, and Dione
The Cassini spacecraft observes three of Saturn's moons set against the darkened night side of the planet. Saturn is present on the left this image, but is too dark to see. Rhea (1,528 kilometers, or 949 miles across) is closest to Cassini here and appears largest at the center of the image. Enceladus (504 kilometers, or 313 miles across) is to the right of Rhea. Dione (1,123 kilometers, or 698 miles across) is to the left of Rhea, partly obscured by Saturn.
This view looks toward the northern, sunlit side of the rings from just above the ringplane.
The image was taken in visible red light with the Cassini spacecraft narrow-angle camera on April 25, 2011. The view was obtained at a distance of approximately 2.2 million kilometers (1.4 million miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 67 degrees. Image scale is 13 kilometers (8 miles) per pixel on Rhea. The view was obtained at a distance of approximately 3 million kilometers (1.9 million miles) from Enceladus and at a phase angle of 67 degrees. Image scale is 18 kilometers (11 miles) per pixel on Enceladus. The view was obtained at a distance of approximately 3.1 million kilometers (1.9 million miles) from Dione and at a phase angle of 67 degrees. Image scale is 19 kilometers (12 miles) per pixel on Dione.
The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colorado.
For more information about the Cassini-Huygens mission visit: http://saturn.jpl.nasa.gov/. The Cassini imaging team homepage is at http://ciclops.org.
Credit: NASA/JPL-Caltech/Space Science Institute
Processing: Judy Schmidt
Judy Schmidt's website: http://geckzilla.com
Image Date: April 25, 2011
Release Date: September 13, 2017
Technical details:
Judy: "I just generated some color using the variety of frames available in several series of Red, Green, and Blue filters. I increased the saturation of the image a little to make subtle coloration more apparent. Saturn is very slightly illuminated by ring shine in the upper left corner, but it's hard to see..."
+Judy Schmidt
+NASA Jet Propulsion Laboratory
+European Space Agency, ESA
+NASA Solar System Exploration
+Carolyn Porco Fan Page
#NASA #Astronomy #Science #Space #Saturn #Planet #Rings #Moons #Rhea #Enceladus #Dione #SolarSystem #Exploration #Cassini #Spacecraft #GrandFinale #JPL #Pasadena #California #UnitedStates #ESA #ASI #STEM #Education
Rhea, Enceladus, and Dione
The Cassini spacecraft observes three of Saturn's moons set against the darkened night side of the planet. Saturn is present on the left this image, but is too dark to see. Rhea (1,528 kilometers, or 949 miles across) is closest to Cassini here and appears largest at the center of the image. Enceladus (504 kilometers, or 313 miles across) is to the right of Rhea. Dione (1,123 kilometers, or 698 miles across) is to the left of Rhea, partly obscured by Saturn.
This view looks toward the northern, sunlit side of the rings from just above the ringplane.
The image was taken in visible red light with the Cassini spacecraft narrow-angle camera on April 25, 2011. The view was obtained at a distance of approximately 2.2 million kilometers (1.4 million miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 67 degrees. Image scale is 13 kilometers (8 miles) per pixel on Rhea. The view was obtained at a distance of approximately 3 million kilometers (1.9 million miles) from Enceladus and at a phase angle of 67 degrees. Image scale is 18 kilometers (11 miles) per pixel on Enceladus. The view was obtained at a distance of approximately 3.1 million kilometers (1.9 million miles) from Dione and at a phase angle of 67 degrees. Image scale is 19 kilometers (12 miles) per pixel on Dione.
The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colorado.
For more information about the Cassini-Huygens mission visit: http://saturn.jpl.nasa.gov/. The Cassini imaging team homepage is at http://ciclops.org.
Credit: NASA/JPL-Caltech/Space Science Institute
Processing: Judy Schmidt
Judy Schmidt's website: http://geckzilla.com
Image Date: April 25, 2011
Release Date: September 13, 2017
Technical details:
Judy: "I just generated some color using the variety of frames available in several series of Red, Green, and Blue filters. I increased the saturation of the image a little to make subtle coloration more apparent. Saturn is very slightly illuminated by ring shine in the upper left corner, but it's hard to see..."
+Judy Schmidt
+NASA Jet Propulsion Laboratory
+European Space Agency, ESA
+NASA Solar System Exploration
+Carolyn Porco Fan Page
#NASA #Astronomy #Science #Space #Saturn #Planet #Rings #Moons #Rhea #Enceladus #Dione #SolarSystem #Exploration #Cassini #Spacecraft #GrandFinale #JPL #Pasadena #California #UnitedStates #ESA #ASI #STEM #Education
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Last Enceladus Plume Observation Just before Cassini Meets its Fate
This movie sequence of images is from the last dedicated observation of the Enceladus plume by NASA's Cassini spacecraft.
The images were obtained over approximately 14 hours as Cassini's cameras stared at the active, icy moon. The view during the entire sequence is of the moon's night side, but Cassini's perspective Enceladus shifts during the sequence. The movie begins with a view of the part of the surface lit by reflected light from Saturn and transitions to completely unilluminated terrain. The exposure time of the images changes about halfway through the sequence, in order to make fainter details visible. (The change also makes background stars become visible.)
The images in this movie sequence were taken on Aug. 28, 2017, using Cassini's narrow-angle camera. The images were acquired at a distance from Enceladus that changed from 684,000 to 539,000 (1.1 million to 868,000 kilometers). Image scale changes during the sequence, from 4 to 3 miles (7 to 5 kilometers) per pixel.
The Cassini mission is a cooperative project of NASA, ESA (the European Space Agency) and the Italian Space Agency. The Jet Propulsion Laboratory, a division of Caltech in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colorado.
Credit: NASA/JPL
This movie sequence of images is from the last dedicated observation of the Enceladus plume by NASA's Cassini spacecraft.
The images were obtained over approximately 14 hours as Cassini's cameras stared at the active, icy moon. The view during the entire sequence is of the moon's night side, but Cassini's perspective Enceladus shifts during the sequence. The movie begins with a view of the part of the surface lit by reflected light from Saturn and transitions to completely unilluminated terrain. The exposure time of the images changes about halfway through the sequence, in order to make fainter details visible. (The change also makes background stars become visible.)
The images in this movie sequence were taken on Aug. 28, 2017, using Cassini's narrow-angle camera. The images were acquired at a distance from Enceladus that changed from 684,000 to 539,000 (1.1 million to 868,000 kilometers). Image scale changes during the sequence, from 4 to 3 miles (7 to 5 kilometers) per pixel.
The Cassini mission is a cooperative project of NASA, ESA (the European Space Agency) and the Italian Space Agency. The Jet Propulsion Laboratory, a division of Caltech in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colorado.
Credit: NASA/JPL
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"Cassini's own discoveries were its demise."
This Friday, NASA’s Cassini spacecraft will execute its final maneuver, careening into Saturn’s atmosphere and melting without a trace.
Scientists and engineers at NASA’s Jet Propulsion Lab, many of them with the 20-year mission since the very start, will work feverishly to keep their beloved spacecraft alive and sending back data for as long as possible.
“Of course it’s really going to be hard to say goodbye to this plucky, capable little spacecraft that has returned all this great science,” said Cassini Project Scientist Linda Spilker at a NASA news conference in April.
Spilker has been there for all of Cassini’s discoveries: from spotting how a hexagonal storm on Saturn’s north pole changes color with the seasons to providing insights into how Saturn’s rings formed. Perhaps most intriguing were Cassini’s discoveries off-planet, on Saturn’s moons, with the identification of methane seas on Titan and exposing the likelihood of a warm, saltwater ocean underneath Enceladus’ icy surface. Both locations carry some ingredients for life, with Enceladus showing greater potential.
So, considering Cassini’s scientific fruitfulness, why is the spacecraft being steered into a death spiral?
This fate seems a little odd, considering other spacecraft that have ventured to other worlds. Most, except those sent to an inhospitable locale like Venus, remain drifting in space. The Voyager 1 spacecraft, 20 years Cassini’s senior, still coasts through interstellar space, beaming back data from beyond the bounds of the solar system. Perhaps a lonely existence, but an existence nonetheless.
One oft-cited reason is that the Cassini spacecraft is running out of fuel. Though true that Cassini has a measly 61 of its original 6,565 pounds of propellant, this fuel is used only for reorienting its trajectory. In theory, the Cassini team could have used the last wisps of fuel to push the spacecraft into a stable orbit around Saturn. Cassini could even have still collected data, since all of its instruments run on power from a different, much more long-lived source (more on that later).
No, the real reason Cassini must die is because of an international treaty with a rule to not contaminate potentially-habitable worlds. To comply with this rule, NASA maintains an Office of Planetary Protection in order “to preserve our ability to study other worlds as they exist in their natural states; to avoid contamination that would obscure our ability to find life elsewhere — if it exists; and to ensure that we take prudent precautions to protect Earth’s biosphere in case it does.”
“Cassini’s own discoveries were its demise,” said Cassini Program Manager Earl Maize at the April conference. “Enceladus has got a warm, saltwater, undersea ocean, and it’s got plumes coming out. We cannot risk an inadvertent contact with that pristine body.”
Parking Cassini in orbit creates a risk of someday colliding with Enceladus. Such an accident could contaminate Enceladus in serious ways, perhaps the most unpleasant of which would be radioactive pollution.
All of Cassini’s electronics run on radioisotope thermoelectric generators (RTGs). These highly reliable nuclear batteries produce heat through slow radioactive decay, which is converted to electricity by a device called a thermocouple. RTGs have no moving parts and, hence nothing to fix, which is perfect for a probe that’s 746 million miles from the nearest mechanic.
Voyager, Pioneer, Cassini, the Curiosity rover — virtually every major mission exploring outer space — have used RTGs to generate power for their everyday activities. But these systems aren’t efficient. Cassini launched with 72 pounds of plutonium-238, which generated about the same amount of power as a microwave… a pretty weak one at that. For comparison, the atomic bomb that destroyed Nagasaki had less than 14 pounds of plutonium, though it was highly enriched.
Still, slamming radioactive material onto a potentially habitable world might not be the best idea.
Cassini could also unknowingly deposit tiny Earth passengers if it crashed into Enceladus. Some microorganisms can survive the harsh vacuum of space. Researchers have found tardigrades, a microscopic aquatic animal, can live in outer space for at least 10 days. Bacteria embedded in rocks survived a year-and-a-half long stint glued to the outside of the International Space Station.
Bringing invasive species to an isolated ecosystem could prove disastrous. Just think of the devastation suffered by Native Americans when Europeans brought smallpox and other germs to the New World. These new diseases killed roughly 90 percent of the Native American population.
But what of Huygens, the European Space Agency probe, that Cassini released onto Titan in 2005? Wouldn’t that be a contamination hazard? Perhaps, but landing on Titan was considered a much more acceptable risk. “Given the fact that Titan is too cold and that there is no liquid water for life as we know it to evolve, the risk of contamination is practically non-existing,” the European Space Agency stated. “The harsh environment is expected to kill microorganisms that may have hitchhiked from Earth on board the clean space probe.”
Saturn, too, possesses zero indications of life, and even if there were, the spacecraft and any hitchhiking microbes would be completely destroyed in the planet’s thick atmosphere.
“Cassini has got to be put safely away,” Maize said at the April news conference, adamant. “The only choice was to destroy it in some controlled fashion.”
This Friday, NASA’s Cassini spacecraft will execute its final maneuver, careening into Saturn’s atmosphere and melting without a trace.
Scientists and engineers at NASA’s Jet Propulsion Lab, many of them with the 20-year mission since the very start, will work feverishly to keep their beloved spacecraft alive and sending back data for as long as possible.
“Of course it’s really going to be hard to say goodbye to this plucky, capable little spacecraft that has returned all this great science,” said Cassini Project Scientist Linda Spilker at a NASA news conference in April.
Spilker has been there for all of Cassini’s discoveries: from spotting how a hexagonal storm on Saturn’s north pole changes color with the seasons to providing insights into how Saturn’s rings formed. Perhaps most intriguing were Cassini’s discoveries off-planet, on Saturn’s moons, with the identification of methane seas on Titan and exposing the likelihood of a warm, saltwater ocean underneath Enceladus’ icy surface. Both locations carry some ingredients for life, with Enceladus showing greater potential.
So, considering Cassini’s scientific fruitfulness, why is the spacecraft being steered into a death spiral?
This fate seems a little odd, considering other spacecraft that have ventured to other worlds. Most, except those sent to an inhospitable locale like Venus, remain drifting in space. The Voyager 1 spacecraft, 20 years Cassini’s senior, still coasts through interstellar space, beaming back data from beyond the bounds of the solar system. Perhaps a lonely existence, but an existence nonetheless.
One oft-cited reason is that the Cassini spacecraft is running out of fuel. Though true that Cassini has a measly 61 of its original 6,565 pounds of propellant, this fuel is used only for reorienting its trajectory. In theory, the Cassini team could have used the last wisps of fuel to push the spacecraft into a stable orbit around Saturn. Cassini could even have still collected data, since all of its instruments run on power from a different, much more long-lived source (more on that later).
No, the real reason Cassini must die is because of an international treaty with a rule to not contaminate potentially-habitable worlds. To comply with this rule, NASA maintains an Office of Planetary Protection in order “to preserve our ability to study other worlds as they exist in their natural states; to avoid contamination that would obscure our ability to find life elsewhere — if it exists; and to ensure that we take prudent precautions to protect Earth’s biosphere in case it does.”
“Cassini’s own discoveries were its demise,” said Cassini Program Manager Earl Maize at the April conference. “Enceladus has got a warm, saltwater, undersea ocean, and it’s got plumes coming out. We cannot risk an inadvertent contact with that pristine body.”
Parking Cassini in orbit creates a risk of someday colliding with Enceladus. Such an accident could contaminate Enceladus in serious ways, perhaps the most unpleasant of which would be radioactive pollution.
All of Cassini’s electronics run on radioisotope thermoelectric generators (RTGs). These highly reliable nuclear batteries produce heat through slow radioactive decay, which is converted to electricity by a device called a thermocouple. RTGs have no moving parts and, hence nothing to fix, which is perfect for a probe that’s 746 million miles from the nearest mechanic.
Voyager, Pioneer, Cassini, the Curiosity rover — virtually every major mission exploring outer space — have used RTGs to generate power for their everyday activities. But these systems aren’t efficient. Cassini launched with 72 pounds of plutonium-238, which generated about the same amount of power as a microwave… a pretty weak one at that. For comparison, the atomic bomb that destroyed Nagasaki had less than 14 pounds of plutonium, though it was highly enriched.
Still, slamming radioactive material onto a potentially habitable world might not be the best idea.
Cassini could also unknowingly deposit tiny Earth passengers if it crashed into Enceladus. Some microorganisms can survive the harsh vacuum of space. Researchers have found tardigrades, a microscopic aquatic animal, can live in outer space for at least 10 days. Bacteria embedded in rocks survived a year-and-a-half long stint glued to the outside of the International Space Station.
Bringing invasive species to an isolated ecosystem could prove disastrous. Just think of the devastation suffered by Native Americans when Europeans brought smallpox and other germs to the New World. These new diseases killed roughly 90 percent of the Native American population.
But what of Huygens, the European Space Agency probe, that Cassini released onto Titan in 2005? Wouldn’t that be a contamination hazard? Perhaps, but landing on Titan was considered a much more acceptable risk. “Given the fact that Titan is too cold and that there is no liquid water for life as we know it to evolve, the risk of contamination is practically non-existing,” the European Space Agency stated. “The harsh environment is expected to kill microorganisms that may have hitchhiked from Earth on board the clean space probe.”
Saturn, too, possesses zero indications of life, and even if there were, the spacecraft and any hitchhiking microbes would be completely destroyed in the planet’s thick atmosphere.
“Cassini has got to be put safely away,” Maize said at the April news conference, adamant. “The only choice was to destroy it in some controlled fashion.”
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Enceladus at Saturn | NASA Cassini Mission
The heavens often seem vast and unchanging as seen from Earth, but movement in the skies is the norm. The relative motions of both Cassini and Enceladus over a 15-minute period create the movement seen in this movie sequence.
Cassini has monitored Enceladus (313 miles or 504 kilometers across) with a particular interest in the plumes and the geology of the south polar region for many years. Different viewing geometries give scientists different information, and the resulting animation gives us a unique “spacecraft’s eye” view of the flyby.
The movie is a composite of six images taken with the Cassini spacecraft narrow-angle camera on Aug. 1, 2017 using filters that allow infrared, green, and ultraviolet light. The image filter centered on 930 nm (IR) was is red in this image, the image filter centered on the green is green, and the image filter centered on 338 nm (UV) is blue.
The view was obtained at a distance of approximately 112,000 miles (181,000 kilometers) from Enceladus. Image scale is about 0.6 mile (1 kilometer) per pixel.
The Cassini Solstice Mission is a joint United States and European endeavor. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter was designed, developed and assembled at JPL. The imaging team consists of scientists from the US, England, France, and Germany. The imaging operations center and team lead (Dr. C. Porco) are based at the Space Science Institute in Boulder, Colo.
For more information about the Cassini Solstice Mission visit http://ciclops.org, http://www.nasa.gov/cassini and http://saturn.jpl.nasa.gov.
Credit: NASA/JPL-Caltech/Space Science Institute
Released: September 4, 2017 (PIA 21344)
Image Preparation: Steve Mullins
Figure Caption: John Moore-Weiss
#NASA #Space #Astronomy #Science #Saturn #Enceladus #Moon #Planet #Plume #Cassini #Spacecraft #Flyby #Hydrothermal #Water #Energy #Seafloor #Ocean #Astrobiology #Habitability #Life #SolarSystem #Cosmos #Universe #JPL #ESA #STEM #Education #Animation #GIF
The heavens often seem vast and unchanging as seen from Earth, but movement in the skies is the norm. The relative motions of both Cassini and Enceladus over a 15-minute period create the movement seen in this movie sequence.
Cassini has monitored Enceladus (313 miles or 504 kilometers across) with a particular interest in the plumes and the geology of the south polar region for many years. Different viewing geometries give scientists different information, and the resulting animation gives us a unique “spacecraft’s eye” view of the flyby.
The movie is a composite of six images taken with the Cassini spacecraft narrow-angle camera on Aug. 1, 2017 using filters that allow infrared, green, and ultraviolet light. The image filter centered on 930 nm (IR) was is red in this image, the image filter centered on the green is green, and the image filter centered on 338 nm (UV) is blue.
The view was obtained at a distance of approximately 112,000 miles (181,000 kilometers) from Enceladus. Image scale is about 0.6 mile (1 kilometer) per pixel.
The Cassini Solstice Mission is a joint United States and European endeavor. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter was designed, developed and assembled at JPL. The imaging team consists of scientists from the US, England, France, and Germany. The imaging operations center and team lead (Dr. C. Porco) are based at the Space Science Institute in Boulder, Colo.
For more information about the Cassini Solstice Mission visit http://ciclops.org, http://www.nasa.gov/cassini and http://saturn.jpl.nasa.gov.
Credit: NASA/JPL-Caltech/Space Science Institute
Released: September 4, 2017 (PIA 21344)
Image Preparation: Steve Mullins
Figure Caption: John Moore-Weiss
#NASA #Space #Astronomy #Science #Saturn #Enceladus #Moon #Planet #Plume #Cassini #Spacecraft #Flyby #Hydrothermal #Water #Energy #Seafloor #Ocean #Astrobiology #Habitability #Life #SolarSystem #Cosmos #Universe #JPL #ESA #STEM #Education #Animation #GIF
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Enceladus at Saturn | NASA Cassini Mission
The heavens often seem vast and unchanging as seen from Earth, but movement in the skies is the norm. The relative motions of both Cassini and Enceladus over a 15-minute period create the movement seen in this movie sequence.
Cassini has monitored Enceladus (313 miles or 504 kilometers across) with a particular interest in the plumes and the geology of the south polar region for many years. Different viewing geometries give scientists different information, and the resulting animation gives us a unique “spacecraft’s eye” view of the flyby.
The movie is a composite of six images taken with the Cassini spacecraft narrow-angle camera on Aug. 1, 2017 using filters that allow infrared, green, and ultraviolet light. The image filter centered on 930 nm (IR) was is red in this image, the image filter centered on the green is green, and the image filter centered on 338 nm (UV) is blue.
The view was obtained at a distance of approximately 112,000 miles (181,000 kilometers) from Enceladus. Image scale is about 0.6 mile (1 kilometer) per pixel.
The Cassini Solstice Mission is a joint United States and European endeavor. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter was designed, developed and assembled at JPL. The imaging team consists of scientists from the US, England, France, and Germany. The imaging operations center and team lead (Dr. C. Porco) are based at the Space Science Institute in Boulder, Colo.
For more information about the Cassini Solstice Mission visit http://ciclops.org, http://www.nasa.gov/cassini and http://saturn.jpl.nasa.gov.
Credit: NASA/JPL-Caltech/Space Science Institute
Released: September 4, 2017 (PIA 21344)
Image Preparation: Steve Mullins
Figure Caption: John Moore-Weiss
#NASA #Space #Astronomy #Science #Saturn #Enceladus #Moon #Planet #Plume #Cassini #Spacecraft #Flyby #Hydrothermal #Water #Energy #Seafloor #Ocean #Astrobiology #Habitability #Life #SolarSystem #Cosmos #Universe #JPL #ESA #STEM #Education
The heavens often seem vast and unchanging as seen from Earth, but movement in the skies is the norm. The relative motions of both Cassini and Enceladus over a 15-minute period create the movement seen in this movie sequence.
Cassini has monitored Enceladus (313 miles or 504 kilometers across) with a particular interest in the plumes and the geology of the south polar region for many years. Different viewing geometries give scientists different information, and the resulting animation gives us a unique “spacecraft’s eye” view of the flyby.
The movie is a composite of six images taken with the Cassini spacecraft narrow-angle camera on Aug. 1, 2017 using filters that allow infrared, green, and ultraviolet light. The image filter centered on 930 nm (IR) was is red in this image, the image filter centered on the green is green, and the image filter centered on 338 nm (UV) is blue.
The view was obtained at a distance of approximately 112,000 miles (181,000 kilometers) from Enceladus. Image scale is about 0.6 mile (1 kilometer) per pixel.
The Cassini Solstice Mission is a joint United States and European endeavor. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter was designed, developed and assembled at JPL. The imaging team consists of scientists from the US, England, France, and Germany. The imaging operations center and team lead (Dr. C. Porco) are based at the Space Science Institute in Boulder, Colo.
For more information about the Cassini Solstice Mission visit http://ciclops.org, http://www.nasa.gov/cassini and http://saturn.jpl.nasa.gov.
Credit: NASA/JPL-Caltech/Space Science Institute
Released: September 4, 2017 (PIA 21344)
Image Preparation: Steve Mullins
Figure Caption: John Moore-Weiss
#NASA #Space #Astronomy #Science #Saturn #Enceladus #Moon #Planet #Plume #Cassini #Spacecraft #Flyby #Hydrothermal #Water #Energy #Seafloor #Ocean #Astrobiology #Habitability #Life #SolarSystem #Cosmos #Universe #JPL #ESA #STEM #Education
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14 hours watching the plume at Saturn’s moon Enceladus, Cassini's last dedicated observation of this singular scene
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A ULTIMA OBSERVAÇÃO DAS PLUMAS DE ENCELADUS......08-09-2017
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Enceladus, a moon with all three primary ingredients for life as we know it
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James Webb Telescope Will Scan Enceladus & Europa For Signs Of Life
https://www.space.com/38014-webb-will-search-for-life-on-icy-moons.html
https://www.space.com/38014-webb-will-search-for-life-on-icy-moons.html
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