Featured Research

from universities, journals, and other organizations

University Of Chicago Instrument Ready To Begin Four-year Study Of Saturn's Rings

Date:
June 17, 2004
Source:
University Of Chicago
Summary:
After a quiet, six-and-a-half-year, 2.2-billion-mile journey to Saturn aboard NASA's Cassini spacecraft, the University of Chicago's dust detector will soon begin its attempt to help unravel the mystery of the planet's legendary rings one tiny particle at a time.

After a quiet, six-and-a-half-year, 2.2-billion-mile journey to Saturn aboard NASA's Cassini spacecraft, the University of Chicago's dust detector will soon begin its attempt to help unravel the mystery of the planet's legendary rings one tiny particle at a time.

Related Articles


Cassini will become the first spacecraft ever to enter Saturn's orbit at precisely 9:30 p.m. CDT June 30. NASA launched Cassini in October 1997. The University's instrument, called the High Rate Detector, has quietly recorded sporadic dust impacts in interplanetary space during the mission. "We have seen some impacts, but only a few, maybe one a month. That's about all you'd expect," said Anthony Tuzzolino, a Senior Scientist at the University of Chicago's Enrico Fermi Institute.

But that could change on June 30, after Cassini passes through a gap between two of Saturn's rings. The rings consist of billions of objects ranging in size from microscopic particles to car-sized boulders locked into orbit around the planet.

"The project chose a virtually void section to pass through the ring system so we didn't get clobbered," Tuzzolino said. "After ring-plane crossing, then we start the measurements of the trapped dust in Saturn's system."

The $3 billion Cassini-Huygens mission is the most complex that has ever flown, involving 260 scientists from the United States and 17 European nations. Cassini and its Huygens probe are equipped with a total of 18 instruments. Cassini will release Huygens for a descent to the surface of Titan, Saturn's largest moon, in December.

During the next four years, Cassini will orbit Saturn 76 times along different orbital planes and execute 52 close encounters with the planet's 31 known moons. The University of Chicago detector will collect data the entire time as a component of a larger instrument, the German Cosmic Dust Analyzer. Together the two instruments will study the physical, chemical and dynamical properties of trapped Saturnian dust and its interactions with the planet's rings, icy moons and magnetosphere.

The High Rate Detector instrument, which was built by Tuzzolino and tested with help from Thanasis Economou, Senior Scientist in the Enrico Fermi Institute, will measure particles ranging in size from twice the diameter of a human hair to particles 100 times smaller. The German instrument will measure even smaller particles.

The University of Chicago instrument is capable of detecting 100,000 particles per second as they collide with two small detectors mounted on the larger German instrument. "I wanted that capability, and it's paid off many times," said Tuzzolino, who has contributed his expertise to dozens of NASA missions during the last four decades.

Last January, an instrument similar to the Cassini detector flew aboard the Stardust spacecraft during its encounter with Comet Wild 2. "On Stardust we had 2,000 counts in less than one second," Tuzzolino said. "You must have a high counting rate capability to make these kind of measurements."

And from 1999 to 2002, another Chicago dust detector flew aboard an Air Force satellite to study orbital debris. During that mission, the instrument detected a cloud of tiny debris particles that was scattered into space when the upper stage of a Chinese rocket unexpectedly exploded in orbit in 2000. The detection marked the first time that scientists had been able to link ultra-small particles to the break-up of a particular satellite.

Tuzzolino looks forward to more unexpected results from Saturn and its moons. "There's a lot for us to learn," he said.


Story Source:

The above story is based on materials provided by University Of Chicago. Note: Materials may be edited for content and length.


Cite This Page:

University Of Chicago. "University Of Chicago Instrument Ready To Begin Four-year Study Of Saturn's Rings." ScienceDaily. ScienceDaily, 17 June 2004. <www.sciencedaily.com/releases/2004/06/040617080226.htm>.
University Of Chicago. (2004, June 17). University Of Chicago Instrument Ready To Begin Four-year Study Of Saturn's Rings. ScienceDaily. Retrieved January 29, 2015 from www.sciencedaily.com/releases/2004/06/040617080226.htm
University Of Chicago. "University Of Chicago Instrument Ready To Begin Four-year Study Of Saturn's Rings." ScienceDaily. www.sciencedaily.com/releases/2004/06/040617080226.htm (accessed January 29, 2015).

Share This


More From ScienceDaily



More Space & Time News

Thursday, January 29, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Asteroid's Moon Spotted During Earth Flyby

Asteroid's Moon Spotted During Earth Flyby

Rumble (Jan. 27, 2015) Scientists working with NASA&apos;s Deep Space Network antenna at Goldstone, California discovered an unexpected moon while observing asteroid 2004 BL86 during its recent flyby past Earth. Credit to &apos;NASA JPL&apos;. Video provided by Rumble
Powered by NewsLook.com
Water Fleas Prepare for Space Voyage

Water Fleas Prepare for Space Voyage

Reuters - Innovations Video Online (Jan. 26, 2015) Scientists are preparing a group of water fleas for a unique voyage into space. The aquatic crustaceans, known as Daphnia, can be used as a miniature model for biomedical research, and their reproductive and swimming behaviour will be tested for signs of stress while on board the International Space Station. Jim Drury went to meet the team. Video provided by Reuters
Powered by NewsLook.com
Mars Rover Opportunity Celebrates 11-Year Anniversary

Mars Rover Opportunity Celebrates 11-Year Anniversary

Rumble (Jan. 26, 2015) Eleven years ago NASA&apos;s Opportunity rover touched down on Mars for what was only supposed to be a 90-day mission. Since then it has traveled 25.9 miles (41.7 kilometers), further than any other off-Earth surface vehicle has ever driven. Credit to &apos;NASA&apos;. Video provided by Rumble
Powered by NewsLook.com
NASA's On Course To Take Pluto's Best Photo Ever

NASA's On Course To Take Pluto's Best Photo Ever

Newsy (Jan. 25, 2015) NASA&apos;s New Horizons probe is en route to snap a picture of Pluto this summer, but making sure it doesn&apos;t miss its one chance to do so starts now. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins