arcadebion.blogg.se

• #A twisted tale series series#

The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. Another possibility is that the impactor struck an already inclined moonlet, shattered it to bits and the debris remained in an inclined orbit. The researchers speculate such an inclined sheet may have been produced around that time by the impact of a comet or meteoroid into the D ring which kicked out a cloud of fine particles that ultimately inherited some of the tilt of the impactor's trajectory as it slammed into the rings. The rate at which the pattern appears to be winding up is quite close to the rate scientists would expect for a vertically corrugated spiraling sheet of material at this location in the rings that is responding to gravitational forcing from Saturn.Īs Cassini imaging scientists extrapolated the spiraling trend backward in time, they found that it completely unwound in 1984, leaving only an inclined, or tilted, sheet of material. Thus, it appears the wavelength of the wavy structure has been decreasing: that is, this feature has been winding up like a spring over time. There were insufficient observations to discern the spiral nature of the feature.

In this case, variations in brightness would correspond to changing slopes in the rippled ring material ( see image with inset graphic).Īn observation made with NASA's Hubble Space Telescope in 1995 also saw a periodic structure in the outer D ring, but its wavelength was then 60 kilometers (37 miles). This phenomenon would occur if the region contains a sheet of fine material that is vertically corrugated, like a tin roof. When viewed along a line of sight nearly in the ringplane, a pattern of brightness reversals is observed: a part of the ring that appears bright on the far side of the rings appears dark on the near side of the rings, and vice versa (see D Ring Sight Lines).

#A twisted tale series series#

This continuously changing ring structure provides circumstantial evidence for a possible recent collision event in the rings.

But will she able to do so.Saturn's D ring-the innermost of the planet's rings-sports an intriguing structure that appears to be a wavy, or "vertically corrugated," spiral. Returning to the place of nonsense from her childhood, Alice finds herself on a mission to stop the Queen of Hearts’ tyrannical rule and to find her place in both worlds. And as Alice develops a self-portrait, she finds the most disturbing image of all - a badly injured dark-haired girl asking for Alice’s help. Mary Ann.

There’s something eerily off about them, even for Wonderland creatures. She’s also interested in learning more about the young lawyer she met there, but just because she’s curious, of course, not because he was sweet and charming.īut when Alice develops photographs she has recently taken about town, familiar faces of old suddenly appear in the place of her actual subjects - the Queen of Hearts, the Mad Hatter, the Caterpillar. Yao’s teashop or to visit the children playing in the Square. She’d rather spend golden afternoons with her trusty camera or in her aunt Vivian’s lively salon, ignoring her sister’s wishes that she stop all that “nonsense” and become a “respectable” member of society. What if Wonderland was in peril and Alice was very, very late?Īlice is different than other 18-year-old ladies in Kexford, which is perfectly fine with her.