New?! Pic is 2005! "@pourmecoffee: Cassini's ... new shot of Hyperion, Saturn's spongy moon
Richard Dawkins @RichardDawkins
@carolynporco Hyperion is lovely, Carolyn. Is it non-spherical because too small?
Carolyn Porco @carolynporco
@RichardDawkins It's also in a dynamically chaotic orbit
THANKS AND KEEP ME POSTED WITH ANY PRAYER POINT AND INSPIRATIONAL MESSAGES AND MOTIVATIONAL CHRISTIAN QUOTES. STAY CONNECTED AS YOU STAY BLESSED WITH HIM IN HIS PRESENCE.
Nice! "@ridingrobots: @carolynporco I made this for National Poetry Month: #NaPoWriMo "
By Bill Dunford
Carolyn Porco, veteran planetary scientist and leader of the imaging team on NASA's Cassini mission at Saturn, has accepted dual invitations to be a Fellow of the California Academy of Sciences in Golden Gate Park, San Francisco, and a Distinguished Scholar within the Department of Astronomy at the University of California at Berkeley. The Academy is a world-leading museum, research center, and educational institution with the largest, all-digital, planetarium in the country. UC Berkeley is the flagship University of the UC system.
Carolyn Porco retweeted TED Talks
An interactive periodic table. Wonderful idea!
A lesson about every single element on the periodic table
Created by the Periodic Videos team using the TED-Ed platform.
Tendril-producing Geysers on Enceladus' South Polar Terrain
April 14, 2015: Long, sinuous, tendril-like structures seen in the vicinity of Saturn's icy moon Enceladus originate directly from geysers erupting from its surface, according to scientists studying images from NASA's Cassini spacecraft. This result is published online today in a study in the Astronomical Journal, along with additional insights into the nature of the structures.
"We've been able to show that each unique tendril structure can be reproduced by particular sets of geysers on the moon's surface," said Colin Mitchell, a Cassini imaging team associate at the Space Science Institute in Boulder, Colorado, and lead author of the paper. Mitchell and colleagues used computer simulations to follow the trajectories of ice grains ejected from individual geysers. The geysers, which were discovered by Cassini in 2005, are jets of tiny water ice particles, water vapor and simple organic compounds.
Under certain lighting conditions, Cassini's wide-view images showing icy material erupting from Enceladus reveal faint, finger-like features, dubbed "tendrils" by the imaging team. The tendrils reach into Saturn's E ring—the ring in which Enceladus orbits—extending tens of thousands of miles (or kilometers) away from the moon. Since the tendrils were discovered, scientists have thought they were the result of the moon's geysering activity and the means by which Enceladus supplies material to the E ring. But the ghostly features had never before been traced directly to geysers on the surface.
Because the team was able to show that tendril structures of different shapes correspond to different sizes of geyser particles, the team was able to zero in on the sizes of the particles forming them. They found the tendrils are composed of particles with diameters no smaller than about a hundred thousandth of an inch, a size consistent with the measurements of E-ring particles made by other Cassini instruments.
As the researchers examined images from different times and positions around Saturn, they also found that the detailed appearance of the tendrils changes over time. "It became clear to us that some features disappeared from one image to the next," said John Weiss, an imaging team associate at Saint Martin's University in Lacey, Washington, and an author on the paper.
The authors suspect that changes in the tendrils' appearance likely result from the cycle of tidal stresses—squeezing and stretching of the moon as it orbits Saturn—and its control of the widths of fractures from which the geysers erupt. The stronger the tidal stresses raised by Saturn at any point on the fractures, the wider the fracture opening and the greater the eruption of material. The authors will investigate in future work whether this theory explains the tendrils' changing appearance.
There is even more that can be extracted from the images, the scientists say. "As the supply lanes for Saturn's E ring, the tendrils give us a way to ascertain how much mass is leaving Enceladus and making its way into Saturn orbit," said Carolyn Porco, team leader for the imaging experiment and a coauthor on the paper. "So, another important step is to determine how much mass is involved, and thus estimate how much longer the moon's sub-surface ocean may last." An estimate of the lifetime of the ocean is important in understanding the evolution of Enceladus over long timescales.
Because of its significance to the investigation of possible extraterrestrial habitable zones, Enceladus is a major target of investigation for the final years of the Cassini mission. Many observations, including imaging of the plume and tendril features, and thermal observations of the surface of its south polar geyser basin, are planned during the next couple of years.
The Cassini-Huygens mission is a cooperative project of NASA, ESA (European Space Agency) and the Italian Space Agency. NASA's Jet Propulsion Laboratory in Pasadena, California, manages the mission for the agency's Science Mission Directorate in Washington. JPL is a division of the California Institute of Technology in Pasadena. The Cassini imaging operations center is based at the Space Science Institute in Boulder, Colorado.
More information about Cassini, visit:
Credit: NASA/JPL-Caltech/Space Science Institute
#NASA #Space #Astronomy #Science #Saturn #Planet #Enceladus #Geysers #Moon #Rings #Cassini #Spacecraft #JPL #ESA
from Bill Dunford 2 months ago
Simulated views from the Cassini spacecraft in orbit around Saturn in 2014--along with the real images its cameras captured at the very moments shown in the simulations.
Music by Dexter Britain. Made with JPL's Eyes on the Solar System software and images available from saturn.jpl.nasa.gov. Other places to find out details about the pictures include: solarsystem.nasa.gov and planetary.org. "
from fabio di donato PLUS 1 year ago / Creative Commons License: by nc sa ALL AUDIENCES
Waltz Around Saturn with this video showing highlights from Cassini's exploration of the giant planet, its magnificent rings, and fascinating family of moons.
(WARNING: this video may not be suitable for people with photosensitive epilepsy)
The video is dedicated to the memory of Margherita Hack, astrophysicist and popular science writer (2013)
She made me love the stars
music Dmitri Shostakovich - Jazz Suite No.2: VI. Waltz 2 - Armonie Symphony Orchestra (thanks to Erica Alberti for suggestion)
image from Cassini–Huygens spacecraft mission to the Saturn system by NASA and European Space Agency
edit by Fabio Di Donato
This video shows a selection from more than 200.000 pictures taken by the Cassini Spacecraft around Saturn's Rings in a period between 2004 and 2012, published through the Planetary Data System between June 2005 and June 2013 - If you want to know more about the mission please visit saturn.jpl.nasa.gov/
For an in-depth explanation of what you can see in this video here is a great article by Phil Plait:
And yes, at 2:10 you can watch the moon of Mimas where the large Herschel crater makes the moon look like the Death Star in the movie "Star Wars" by George Lucas
An interview by Ben Richmond on the making of Around Saturn:
RAW images were processed to PNG thanks to the Vicar-to-PNG procedure provided by Jessica McKellar and Adam Fletcher: vimeo.com/41634392
I used a 30 fps sequence, 1 picture x frame
Friday, July 19th 2013 @ 2:27 p.m. Earth was captured in a photo taken by NASA's Cassini Mission to Saturn. This video partecipated to the #WaveAtSaturn and #DayEarthSmiled events
For more images from space please watch:
Delicate Home vimeo.com/58976799
Dancing with the Stars vimeo.com/53957628
If you enjoyed the fast montage please watch:
Feel the tech touch vimeo.com/52861540
or jump on the cockpit of a high speed train:
Mad Train (4 min) vimeo.com/69354910
Tunnels (8 min) vimeo.com/55198112
For more videos with classical music:
Thanks to Miura Trabucco for constantly reviewing my works and always suggesting the right thing (and for the title :-)
This is not the first video made with Cassini footage, here in the vimeo community you can find many other great videos on Saturn, please watch them
Some articles about this video:
Love, Fabio "
Carolyn C. Porco (born March 6, 1953) is an American planetary scientist known for her work in the exploration of the outer solar system, beginning with her imaging work on the Voyager missions to Jupiter,Saturn, Uranus and Neptune in the 1980s. She leads the imaging science team on the Cassinimission currently in orbit around Saturn. She is also an imaging scientist on the New Horizons mission launched to Plutoon January 19, 2006. She is an expert on planetary rings and the Saturnian moon, Enceladus.
She has co-authored over 120 scientific papers on subjects ranging from the spectroscopy of Uranus and Neptune, the interstellar medium, thephotometry of planetary rings, satellite/ring interactions, computer simulations of planetary rings, the thermal balance of Triton’s polar caps, heat flow in the interior ofJupiter, and a suite of results on the atmosphere, satellites, and rings of Saturn from the Cassini imaging experiment.
Porco was responsible for the epitaph and proposal to honor the late renowned planetary geologistEugene Shoemaker by sending hiscremains to the Moon aboard theLunar Prospector spacecraft in 1998.
A frequent public speaker, Porco has given two popular lectures at TED as well as the opening speech for Pangea Day, a May 2008 global broadcast coordinated from six cities around the world, in which she described the cosmic context for human existence. Porco has also won a number of awards and honors for her contributions to science and the public sphere; for instance, in 2008 she was named by Wired magazine as one of '15 People the Next President Should Listen To.' In 2009, New Statesman named her as one of 'The 50 People Who Matter Today.' In 2010 she was awarded the Carl Sagan Medal, presented by the American Astronomical Society for Excellence in the Communication of Science to the Public. And in 2012, she was named one the 25 most influential people in space by TIME magazine.
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