Saturn's Double Light Show
NASA, ESA, and Jonathan Nichols (University of Leicester) · Download full size image
In January and March 2009, astronomers using NASA's Hubble Space Telescope took advantage of a rare opportunity to record Saturn when its rings were edge-on, resulting in a unique movie featuring the nearly symmetrical light show at both of the giant planet's poles. It takes Saturn almost thirty years to orbit the Sun, with the opportunity to image both of its poles occurring only twice during that time.
The light shows, called aurorae, are produced when electrically charged particles race along the planet's magnetic field and into the upper atmosphere where they excite atmospheric gases, causing them to glow. Saturn's aurorae resemble the same phenomena that take place at the Earth's poles.
The 2009 Hubble Advanced Camera for Surveys observations have allowed astronomers to monitor the behavior of Saturn's poles in the same shot over a sustained period of time and to analyze the planet's northern and southern lights simultaneously. The northern auroral oval appears to be slightly smaller and more intense than the southern one, implying that Saturn's magnetic field is not equally distributed across the planet; it is slightly uneven and stronger in the north than the south.
Posted on: 22 Feb, 2010
- Hubble Space Telescope
- Chandra X-ray Observatory
- Compton Gamma-Ray Observatory
- ROSAT X-ray Observatory
- SOHO Solar Observatory
- WMAP
- 2MASS Sky Survey
- ASTER Earth Imaging Instrument
- MISR Earth Imaging Instrument
- NRAO Gallery
- NAOJ Subaru Telescope
- Galaxy Evolution Explorer (GALEX)
- European Southern Observatory (ESO)
- Wide-Field Imager (WFI)
- SOFI Infrared Multi-mode Instrument
- Canada-France-Hawaii Telescope (CFHT)
- New Technology Telescope (NTT)
- Atacama Pathfinder Experiment (APEX)
- SOHO Daily Images - 1996
- Spitzer Space Telescope (SIRTF)
- Infrared Legacy Gallery
- Herschel
- Advanced Technology Solar Telescope
- Planck
- Wide-field Infrared Survey Explorer (WISE)
Latest Thoughts
-
Mar 10, 2010, 8:45 am
STEREO Captures A Coronal Mass Ejection
-
Mar 10, 2010, 8:30 am
Music Education Can Shape a Child's Sensory System
-
Mar 10, 2010, 8:19 am
Food Warning Labels Could Help Prevent Choking Hazards
-
Mar 10, 2010, 8:00 am
Woman Diver Trains Spacewalkers Underwater
-
Mar 10, 2010, 7:59 am
Fighting Crime With Math
-
Mar 10, 2010, 7:27 am
Acupuncture May Relieve Depression in Pregnant Women
- More Videos
RSS Feeds