Feeds

Enceladus revealed as Cassini's photo tour continues

Wish you were here?

  • alert
  • submit to reddit

Build a business case: developing custom apps

Cassini has sent back another batch of pictures from its tour of the Saturn orbital system. This time, it has snapped the surface of the icy moon Enceladus in unprecedented detail.

Craters and cracks on Enceladus. Image: CICLOPS

Enceladus, discovered in 1789 by Sir William Herschel, is the brightest object in the solar system (not counting the very shiny star in the middle, of course). This has led scientists to theorise that the moon is, or was until very recently, geologically active.

Constantly being resurfaced with fresh ice and snow, by a mechanism that has yet to be determined, has kept the outermost layer bright and white enough to qualify for inclusion in a washing powder advert. Some of the surface could be a mere 100 million years old, according to researchers.

As Cassini flew past on 14 July, it took pictures of the moon's varied surface: craters softened by a covering of ice, and complex fractured terrain, reminiscent of Jupiter's moon, Europa. Some of the areas covered in fissures are entirely free of impact scars.

Great boulders of ice scattered across the surface of Enceladus in the highest resolution images ever taken by Cassini. Image: CICLOPS

The sheer variety of features visible on the surface reveal a history of many different geological processes. Many of the larger craters are softened by a fine-grained frost, and are intersected by multiple tectonic faults.

The geological activity on Enceladus most likely took place in several episodes, and could even continue into the present day. However, there is no direct evidence that the moon is still geologically active.

Cassini also sent back the highest resolution images it has ever taken, revealing the landscape of Enceladus in remarkable detail. Boulders and ice blocks between ten and 100 metres across dominate the surface. The region is unusual, the imagining team says, because it seems to lack the fine-grained frost that covers the rest of the moon. This is further evidence of a young surface.

The researchers have combined the fly-by photography into a movie sequence. You can have a look here. ®

Related stories

Cassini films Hyperion in orbit
Say what you like about Saturn: its moons really have atmosphere
Cassini finds two tiny Saturnian moons

Boost IT visibility and business value

More from The Register

next story
Just TWO climate committee MPs contradict IPCC: The two with SCIENCE degrees
'Greenhouse effect is real, but as for the rest of it ...'
Asteroid's DINO KILLING SPREE just bad luck – boffins
Sauricide WASN'T inevitable, reckon scientists
Flamewars in SPAAACE: cooler fires hint at energy efficiency
Experiment aboard ISS shows we should all chill out for cleaner engines
Brit amateur payload set to complete full circle around PLANET EARTH
Ultralight solar radio tracker in glorious 25,000km almost-space odyssey
NASA Mars rover FINALLY equals 1973 Soviet benchmark
Yet to surpass ancient Greek one, however
Famous 'Dish' radio telescope to be emptied in budget crisis: CSIRO
Radio astronomy suffering to protect Square Kilometre Array
prev story

Whitepapers

Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Why and how to choose the right cloud vendor
The benefits of cloud-based storage in your processes. Eliminate onsite, disk-based backup and archiving in favor of cloud-based data protection.
The Essential Guide to IT Transformation
ServiceNow discusses three IT transformations that can help CIO's automate IT services to transform IT and the enterprise.
Maximize storage efficiency across the enterprise
The HP StoreOnce backup solution offers highly flexible, centrally managed, and highly efficient data protection for any enterprise.