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Topic: NASA’s Cassini Spacecraft

NASA’s Cassini Spacecraft’s 20 Year Mission to come to a close

 

Written by Steven Siceloff
NASA’s Kennedy Space Center

NASA - National Aeronautics and Space AdministrationFlorida – As NASA’s Cassini spacecraft spends its last few weeks in orbit around Saturn before making a controlled impact with the planet in what NASA dubbed Cassini’s “Grand Finale,” some of those who helped launch the mission 20 years ago are thrilled with the success of the massive probe they helped dispatch to one of the solar system’s most intriguing worlds.

“There’s just a real sense of fulfillment associated with being part of a launch team, particularly something as big as Cassini and as complicated as Cassini is and the whole makeup of the whole Cassini team,” said Ray Lugo, launch director for Cassini. “It was a big community of folks and everybody had to do their part to make sure that mission got off right.”

The planet Saturn as seen from NASA's Cassini spacecraft. (NASA)

The planet Saturn as seen from NASA’s Cassini spacecraft. (NASA)

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NASA’s Cassini Spacecraft finds evidence that Saturn’s Moon Enceladus axis may have shifted

 

Written by Preston Dyches
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Saturn’s icy, ocean-bearing moon Enceladus may have tipped over in the distant past, according to recent research from NASA’s Cassini mission. Researchers with the mission found evidence that the moon’s spin axis — the line through the north and south poles — has reoriented, possibly due to a collision with a smaller body, such as an asteroid.

Examining the moon’s features, the team showed that Enceladus appears to have tipped away from its original axis by about 55 degrees — more than halfway toward rolling completely onto its side.

Working with image data from NASA's Cassini mission, researchers have found evidence that Saturn's moon Enceladus may have tipped over, reorienting itself so that terrain closer to its original equator was relocated to the poles. (NASA/JPL-Caltech/Space Science Institute/Cornell University)

Working with image data from NASA’s Cassini mission, researchers have found evidence that Saturn’s moon Enceladus may have tipped over, reorienting itself so that terrain closer to its original equator was relocated to the poles. (NASA/JPL-Caltech/Space Science Institute/Cornell University)

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NASA’s Cassini Spacecraft observes Saturn’s Solstice

 

Written by Preston Dyches
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – NASA’s Cassini spacecraft still has a few months to go before it completes its mission in September, but the veteran Saturn explorer reaches a new milestone today. Saturn’s solstice — that is, the longest day of summer in the northern hemisphere and the shortest day of winter in the southern hemisphere — arrives today for the planet and its moons.

The Saturnian solstice occurs about every 15 Earth years as the planet and its entourage slowly orbit the sun, with the north and south hemispheres alternating their roles as the summer and winter poles.

These natural color views from Cassini show how the color of Saturn's north-polar region changed between June 2013 and April 2017, as the northern hemisphere headed toward summer solstice. (NASA/JPL-Caltech/SSI/Hampton Univ.)

These natural color views from Cassini show how the color of Saturn’s north-polar region changed between June 2013 and April 2017, as the northern hemisphere headed toward summer solstice. (NASA/JPL-Caltech/SSI/Hampton Univ.)

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NASA releases Video showing Cassini Spacecraft’s trip across Saturn

 

Written by Preston Dyches
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – A new movie sequence of images from NASA’s Cassini spacecraft shows the view as the spacecraft swooped over Saturn during the first of its Grand Finale dives between the planet and its rings on April 26th.

The movie comprises one hour of observations as the spacecraft moved southward over Saturn. It begins with a view of the swirling vortex at the planet’s north pole, then heads past the outer boundary of the hexagon-shaped jet stream and beyond.

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NASA’s Cassini Spacecraft discovers little dust between Saturn and it’s Rings

 

Written by Preston Dyches
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – As NASA’s Cassini spacecraft prepares to shoot the narrow gap between Saturn and its rings for the second time in its Grand Finale, Cassini engineers are delighted, while ring scientists are puzzled, that the region appears to be relatively dust-free. This assessment is based on data Cassini collected during its first dive through the region on April 26th.

With this information in hand, the Cassini team will now move forward with its preferred plan of science observations.

NASA's Cassini spacecraft is shown diving through the gap between Saturn and its rings in this artist's depiction. (NASA/JPL-Caltech)

NASA’s Cassini spacecraft is shown diving through the gap between Saturn and its rings in this artist’s depiction. (NASA/JPL-Caltech)

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NASA’s Cassini spacecraft completes voyage between Saturn and it’s Rings

 

Written by Preston Dyches
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – NASA’s Cassini spacecraft is back in contact with Earth after its successful first-ever dive through the narrow gap between the planet Saturn and its rings on April 26th, 2017.

The spacecraft is in the process of beaming back science and engineering data collected during its passage, via NASA’s Deep Space Network Goldstone Complex in California’s Mojave Desert.

The DSN acquired Cassini’s signal at 11:56pm PDT on April 26th, 2017 (1:56am CDT on April 27th) and data began flowing at 12:01am PDT (2:01am CDT) on April 27th.

These unprocessed image shows features in Saturn's atmosphere from closer than ever before. The views were captured by NASA's Cassini spacecraft during its first Grand Finale dive past the planet on April 26, 2017. (NASA/JPL-Caltech/Space Science Institute)

These unprocessed image shows features in Saturn’s atmosphere from closer than ever before. The views were captured by NASA’s Cassini spacecraft during its first Grand Finale dive past the planet on April 26, 2017. (NASA/JPL-Caltech/Space Science Institute)

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NASA’s Cassini Spacecraft set to dive between Saturn and it’s Rings

 

Written by Preston Dyches
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – NASA’s Cassini spacecraft is set to make its first dive through the narrow gap between Saturn and its rings on April 26th, 2017.

Because that gap is a region no spacecraft has ever explored, Cassini will use its dish-shaped high-gain antenna (13 feet or 4 meters across) as a protective shield while passing through the ring plane. No particles larger than smoke particles are expected, but the precautionary measure is being taken on the first dive.

This artist's rendering shows NASA's Cassini spacecraft above Saturn's northern hemisphere, heading toward its first dive between Saturn and its rings on April 26, 2017. (NASA/JPL-Caltech)

This artist’s rendering shows NASA’s Cassini spacecraft above Saturn’s northern hemisphere, heading toward its first dive between Saturn and its rings on April 26, 2017. (NASA/JPL-Caltech)

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NASA’s Cassini spacecraft finishes last close orbit of Saturn’s moon Titan

 

Written by Preston Dyches
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – NASA’s Cassini spacecraft has had its last close brush with Saturn’s hazy moon Titan and is now beginning its final set of 22 orbits around the ringed planet.

The spacecraft made its 127th and final close approach to Titan on April 21st at 11:08pm PDT (1:08am CDT on April 22nd), passing at an altitude of about 608 miles (979 kilometers) above the moon’s surface.

Cassini transmitted its images and other data to Earth following the encounter.

This unprocessed image of Saturn's moon Titan was captured by NASA's Cassini spacecraft during its final close flyby of the hazy, planet-sized moon on April 21, 2017. (NASA/JPL-Caltech/Space Science Institute)

This unprocessed image of Saturn’s moon Titan was captured by NASA’s Cassini spacecraft during its final close flyby of the hazy, planet-sized moon on April 21, 2017. (NASA/JPL-Caltech/Space Science Institute)

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NASA’s Cassini spacecraft begins last close flyby of Saturn’s moon Titan

 

Written by Preston Dyches
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – NASA’s Cassini spacecraft will make its final close flyby of Saturn’s haze-enshrouded moon Titan this weekend.

The flyby marks the mission’s final opportunity for up-close observations of the lakes and seas of liquid hydrocarbons that spread across the moon’s northern polar region, and the last chance to use its powerful radar to pierce the haze and make detailed images of the surface.

Closest approach to Titan is planned for 11:08pm PDT on April 21st (2:08am EDT April 22nd). During the encounter, Cassini will pass as close as 608 miles (979 kilometers) above Titan’s surface at a speed of about 13,000 mph (21,000 kph).

Cassini will make its final close flyby of Saturn's moon Titan on April 21st (PDT), using its radar to reveal the moon's surface lakes and seas one last time. (NASA/JPL-Caltech)

Cassini will make its final close flyby of Saturn’s moon Titan on April 21st (PDT), using its radar to reveal the moon’s surface lakes and seas one last time. (NASA/JPL-Caltech)

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NASA’s Cassini spacecraft takes photos of Saturn’s moon Atlas

 

Written by Preston Dyches
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – These raw, unprocessed images of Saturn’s moon, Atlas, were taken on April 12th, 2017, by NASA’s Cassini spacecraft. The flyby had a close-approach distance of about 7,000 miles (11,000 kilometers).

These images are the closest ever taken of Atlas and will help to characterize its shape and geology. Atlas (19 miles, or 30 kilometers across) orbits Saturn just outside the A ring — the outermost of the planet’s bright, main rings.

This unprocessed image of Saturn's moon Atlas was taken on April 12, 2017, by NASA's Cassini spacecraft. (NASA/JPL-Caltech/Space Science Institute)

This unprocessed image of Saturn’s moon Atlas was taken on April 12, 2017, by NASA’s Cassini spacecraft. (NASA/JPL-Caltech/Space Science Institute)

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