You need to upgrade your Flash Player The theme of this blog is not only and obviously space, but in particular “terrestrial worlds”, places that tend to have surfaces on which one could walk or at least attach oneself to. These places sometimes also have other earth-like familiar features such as atmospheres, weather, volcanos, geysers and perhaps, we are finding, even exotic oceans, rivers or lakes that are not necessarily made of familiar materials we are used to here at home. The second theme is imagery. Occasionally I do some retouching of images when needed if an image is incomplete or sometimes “dirty” or noisy. I will attempt to correct image shortcomings based upon other images or well-accepted presumed attributes. When this is done, notes will be offered as to what was added, why and sometimes how it was done. This way no one should ever wonder if something they are looking at is real or photoshop.

Enceladus Unlit by the Sun

Enceladus Unlit by the Sun

The almost surreal nature of this image is due to this: Nothing in this image is sunlit. According to Emily Lackdawalla’s Planetary Society blog, the lower brightest area is lit by the rings of Saturn, by way of reflection off of Saturn’s disc. The right hand side is comparatively low-lit by the moons Tethys and Dione and the left side is also low-lit by the moon Rhea. To the human eye, this scene would appear far darker than seen here and is a testament to the sensitivity of Cassini’s cameras in low-lit situations. If the sun-lit side of Enceladus presented itself here, it would be a complete white out devoid of any details.

My best guess for all the dots is that some are actually star light, while others are anomalies in the imaging process… for instance, the specks in the image that appear over the disc itself are surely noise.

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