Image of the day: Animation of Saturn with Aurora

Posted: July 28, 2014 by tallbloke in solar system dynamics

H/T Maxime Duprez:

saturn-aurora

Comments
  1. tallbloke says:

    Now we need to work out the frame rate…
    Wouldn’t it be something if that pulsation was at 160 minutes. Kotov will do a little dance.
    The images coming back from Cassini are just superb.
    http://saturn.jpl.nasa.gov/

  2. oldbrew says:

    Wikipedia killjoys claim Kotov’s pulse is an illusion.

  3. tallbloke says:

    I covered that controversy in an earlier post. The US data got ‘reanalysed’ to find it was just off the 160 min at 1/9 of an Earth day. So now the idea is that the cause of the wave is a resonance effect in the atmosphere rather than inherent to the Sun. 160 x 4 is 640. That’s pretty close to Saturn’s rotation period isn’t it? See new post and we’ll continue discussion there.
    https://tallbloke.wordpress.com/2014/07/29/apparent-six-minute-slowdown-in-saturns-day-length-challenges-current-magnetosphere-theory/

  4. tallbloke says:

    H/T to Intrepid Wanders for this vid of Saturn’s auroras

  5. acckkii says:

    Reblogged this on acckkii.

  6. tallbloke says:
  7. tallbloke says:
  8. oldbrew says:

    The south pole storm has an eyewall – visible near the end of the video.

    ‘In 2006, Cassini discovered a hurricane-like storm at Saturn’s southern pole. The storm had a distinct eyewall – a common characteristic of hurricanes on Earth, and a phenomenon never-before seen on another world.’

    ‘Unlike hurricanes on Earth, the Saturn hurricane is stationary, measures 8,000km across and 70km in height, and has winds reaching speeds of 560kph (350 mph).’

    http://www.nasaspaceflight.com/2014/06/nasa-esas-cassini-spacecraft-10-years-saturn/

    Where is the energy for such massive activity coming from?