, if they exist, may be acting as "shepherd" moons, helping to keep the rings from spreading out.
Neither the icy chunks nor the large moonlets
, however, can explain the size and shape of the gaps that show up in the Cassini snapshots.
In the simulations, the researchers demonstrated the collisions between these moonlets
results in structures that look very similar to the inner moons.
Also, recent studies have uncovered dozens of mysterious moonlets
, several kilometers in size, bouncing around like bumper cars in the slim, outermost ring, called F.
the Carnegie Institution of Washington, now suggest that a multitude of Trojan moonlets
were formed following Earth's collision with Theia.
Once, it might have had a friend sharing its orbit, a smaller moonlet
that adorned Earth's skies with another shifting face for tens of millions of years.
New York, NY, September 17, 2011 --(PR.com)-- Marcus Hoeglmeier, principal at aturon GmbH, today announced that Moonlet
is now available in the U.S.
These ring features created in the wakes of the moonlets
are called (http://www.ibtimes.com/nasa-cassini-images-tiny-moons-saturns-rings-create-propeller-shapes-2537723) propellers , and six of them have been observed and tracked over the years by Cassini.
A pair of moonlets
found orbiting Jupiter brings the planet's total satellite count to 69.
This brings the number of Saturnian ring arcs with embedded moonlets
found by Cassini to three.
represent an intermediate-size population of ring objects whose presence had been predicted by computer models but never discerned.
It has discovered tiny moons called "(http://www.ibtimes.com/nasa-cassini-images-tiny-moons-saturns-rings-create-propeller-shapes-2537723) moonlets
" barreling through Saturn's rings and showed us what (http://www.ibtimes.com/see-earth-saturns-rings-nasa-photos-capture-our-planet-outer-space-2528822) Earth and our own moon look like to a faraway observer.