Beams of Electrons Link Saturn With Its Moon Enceladus

ScienceDaily (Apr. 20, 2011) — Data from NASA's Cassini spacecraft have revealed that Enceladus, one of Saturn's diminutive moons, is linked to Saturn by powerful electrical currents -- beams of electrons that flow back and forth between the planet and moon.

CAPS, one of the instruments on board Cassini which made the electron beam discovery, includes a electron sensor called CAPS-ELS -- led by UCL (University College London).

Since Cassini's arrival at Saturn in 2004 it has passed 500km-wide Enceladus 14 times, gradually discovering more of its secrets on each visit. Research has found that jets of gas and icy grains emanate from the south pole of Enceladus, which become electrically charged and form an ionosphere. The motion of Enceladus and its ionosphere through the magnetic bubble that surrounds Saturn acts like a dynamo, setting up the newly-discovered current system.

Scientists already knew that the giant planet Jupiter is linked to three of its moons by charged current systems set up by the satellites orbiting inside its giant magnetic bubble, the magnetosphere, and that these current systems form glowing spots in the planet's upper atmosphere. The latest discovery at Enceladus shows that similar processes take place at the Saturnian system too.

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http://www.sciencedaily.com/releases/2011/04/110420143622.htm

jupiter and europa

but point taken. I should read more.

...but the special effects weren't up to it, so they changed it to Jupiter.

The book then leaps ahead a few million years to the year 1999, detailing Dr. Heywood Floyd's travel to Clavius Base on the Moon. Upon his arrival, Floyd attends a meeting. A lead scientist explains that they have found a magnetic disturbance in Tycho, one of the Moon's craters, designated Tycho Magnetic Anomaly One, or TMA-1. An excavation of the area has revealed a large black slab; it is precisely fashioned to a ratio of exactly 1:4:9, or 1²:2²:3²—that is to say that the thickness of the slab is exactly 1/4 of its width and 1/9 of its height. Such a construction rules out any naturally-occurring phenomena, and at three million years of age, it was not crafted by human hands. It is the first evidence for the existence of extraterrestrial intelligent life. Floyd and a team of scientists drive across the moon to actually view TMA-1. They arrive just as sunlight hits upon it for the first time in three million years. It then sends a piercing radio transmission to the far reaches of the solar system. The signal is tracked to Japetus, one of the many moons of Saturn, where an expedition is then planned to investigate.

The book leaps forward 18 months to 2001 to the Discovery One mission to Saturn. Dr. David Bowman and Dr. Francis Poole are the only conscious human beings aboard Discovery One spaceship. Their three other colleagues are in a state of suspended animation, to be awakened when they near Saturn. The HAL 9000, an artificially intelligent computer addressed as "Hal," maintains the ship and is a vital part of life aboard.

More:
http://en.wikipedia.org/wiki/2001:_A_Space_Odyssey_%28novel%29