install theme

NASA’s Cassini Spacecraft Obtains Best Views of Saturn Hexagon via NASA 

Image Credits [Top to bottom, left to right]: First & second images, NASA/JPL-Caltech/SSI/Hampton. Third & fourth images, NASA/JPL-Caltech/University of Arizona.

NASA’s Cassini spacecraft has obtained the highest-resolution movie yet of a unique six-sided jet stream, known as the hexagon, around Saturn’s north pole.

This is the first hexagon movie of its kind, using color filters, and the first to show a complete view of the top of Saturn down to about 70 degrees latitude. Spanning about 20,000 miles (30,000 kilometers) across, the hexagon is a wavy jet stream of 200-mile-per-hour winds (about 322 kilometers per hour) with a massive, rotating storm at the center. There is no weather feature exactly, consistently like this anywhere else in the solar system.

"The hexagon is just a current of air, and weather features out there that share similarities to this are notoriously turbulent and unstable," said Andrew Ingersoll, a Cassini imaging team member at the California Institute of Technology in Pasadena. "A hurricane on Earth typically lasts a week, but this has been here for decades — and who knows — maybe centuries."

Weather patterns on Earth are interrupted when they encounter friction from landforms or ice caps. Scientists suspect the stability of the hexagon has something to do with the lack of solid landforms on Saturn, which is essentially a giant ball of gas.

Better views of the hexagon are available now because the sun began to illuminate its interior in late 2012. Cassini captured images of the hexagon over a 10-hour time span with high-resolution cameras, giving scientists a good look at the motion of cloud structures within.

They saw the storm around the pole, as well as small vortices rotating in the opposite direction of the hexagon. Some of the vortices are swept along with the jet stream as if on a racetrack. The largest of these vortices spans about 2,200 miles (3,500 kilometers), or about twice the size of the largest hurricane recorded on Earth.

Scientists analyzed these images in false color, a rendering method that makes it easier to distinguish differences among the types of particles suspended in the atmosphere — relatively small particles that make up haze — inside and outside the hexagon.

Continue reading …

390 notes
comments powered by Disqus

390 notes

, #NASA #JPL #Caltech #University of Arizona #science #Saturn #Saturn's hexagon #hexagon #astronomy #astronomyfacts #Cassini #Cassini spacecraft #astrophotography #Saturn's north pole
  1. avatar-mom reblogged this from thescienceofreality
  2. fuehrer3345 reblogged this from thescienceofreality
  3. monarchalchemist reblogged this from monarchalchemist
  4. paper-smoke reblogged this from thescienceofreality
  5. supermandreaming reblogged this from thescienceofreality
  6. parreidolia reblogged this from thisisntmyrealhair
  7. stormsacrosstheuniverse reblogged this from electricspacekoolaid
  8. life-in-the-doghouse reblogged this from sagansense
  9. spicerdestroyer reblogged this from somuchscience
  10. somuchscience reblogged this from sagansense
  11. felipe1026 reblogged this from sagansense
  12. asymdon reblogged this from nonscienceinc
  13. ironside451 reblogged this from sagansense
  14. druidofoak reblogged this from sagansense
  15. callernumbertwenty reblogged this from sagansense
  16. desmopipoca reblogged this from sagansense
  17. radioactiveswagsprings reblogged this from sagansense
  18. mygdalae reblogged this from sagansense
  19. nonscienceinc reblogged this from sagansense
  20. fiatemptor reblogged this from sagansense
  21. parsuniverse reblogged this from sagansense