Viewed from Saturn – a small point in the sky

I have talked about the sky view from other planets / moons in other posts, but nothing has impressed me more than this one below.

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This (now iconic) photo here was taken on July 19, 2013 by the wide-angle camera on NASA’s Cassini spacecraft from nearly 900 million miles (1.5 billion km) away. And just below the rings there’s our planet, a small – even though luminous – dot among many others. 

The full (annotated) picture with the other planets is this one – and it’s somehow special because it was the third time Earth was imaged from the outer solar system –  and the first time ever that inhabitants of the planet were made aware in advance that their photo would be take5915_IMG004915n. As narrated in the NASA press release, “with both Cassini’s wide-angle and narrow-angle cameras aimed at Saturn, Cassini was able to capture 323 images in just over four hours. This final mosaic uses 141 of those wide-angle images. Images taken using the red, green and blue spectral filters of the wide-angle camera were combined and mosaicked together to create this natural-color view. […]  This image spans about 404,880 miles (651,591 kilometres) across. The outermost ring shown here is Saturn’s E ring, the core of which is situated about 149,000 miles (240,000 kilometres) from Saturn.  […] Finally, in the lower right of the mosaic, in between the bright blue E ring and the faint but defined G ring, is the pale blue dot of our planet, Earth. Look closely and you can see the moon protruding from the Earth’s lower right. Earth’s twin, Venus, appears as a bright white dot in the upper left quadrant of the mosaic, also between the G and E rings. Mars also appears as a faint red dot embedded in the outer edge of the E ring, above and to the left of Venus.” (The full text is available here).

Finally, for an animated version, watch this video:

http://www.space.com/22066-earth-from-saturn-cassini-takes-our-picture-video.html

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