Secret Of Saturn Rings Unlocked

Posted: Aug 6 2015, 8:03am CDT | by , in Report | Latest Science News


Secret of Saturn Rings Unlocked
This is an artist concept of a close-up view of Saturn's ring particles. The planet Saturn is seen in the background (yellow and brown). The particles (blue) are composed mostly of ice, but are not uniform. They clump together to form elongated, curved aggregates, continually forming and dispersing. The space between the clumps is mostly empty. The largest individual particles shown are a few meters (yards) across. Credit: NASA

Scientists find the secret behind Saturn's rings. The rings follow a mathematical law.

The Rings of Saturn follow a mathematical law of inverse cubes.

An international team of scientists have solved an age-old scientific riddle by discovering that planetary rings, such as those orbiting Saturn, have a universally similar particle distribution.

The research also suggests that Saturn's rings are essentially in a steady state that does not depend on their history.

Professor Brilliantov from the University of Leicester's Department of Mathematics explained: "Saturn's rings are relatively well studied and it is known that they consist of ice particles ranging in size from centimeters to about ten meters. With a high probability these particles are remains of some catastrophic event in a far past, and it is not surprising that there exists debris of all sizes, varying from very small to very large ones.

"What is surprising is that the relative abundance of particles of different sizes follows, with a high accuracy, a beautiful mathematical law 'of inverse cubes'. That is, the abundance of 2 meter-size particles is 8 times smaller than the abundance of 1 meter-size particles, the abundance of 3 meter-size particles is 27 times smaller and so on. This holds true up to the size of about 10 meters, then follows an abrupt drop in the abundance of particles. The reason for this drastic drop, as well as the nature of the amazing inverse cubes law, has remained a riddle until now. We have finally resolved the riddle of particle size distribution. In particular, our study shows that the observed distribution is not peculiar for Saturn's rings, but has a universal character. In other words, it is generic for all planetary rings which have particles to have a similar nature."

Professor Brilliantov added: "The rather general mathematical model elaborated in the study with the focus on Saturn's rings may be successfully applied to other systems, where particles merge, colliding with slow velocities and break into small pieces colliding with large impact speeds.

"Such systems exist in nature and industry and will exhibit a beautiful law of inverse cubes and drop in large particle abundance in their particle size distribution."

The study, which is published in the academic journal Proceedings of the National Academy of Sciences (PNAS).

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