We ’ve been loving the pictures that the Cassini Spacecraft has been radiate back of Saturn and its various moons : this latest one is a gorgeous portraiture of Rhea and Tethys .
The picture was demand back in October with the spacecraft ’s narrow - angle photographic camera :
The two moons seem close together here , but Tethys was about 220,000 Swedish mile ( 360,000 kilometers ) far away from Cassini when the image was captured — nearly the aloofness from Earth to our moon . Thus , the view does not accurately reflect the body ’ relative size .
The image was obtain at a distance of approximately 708,000 miles ( 1.14 million kilometers ) from Rhea . mental image scale on Rhea is 4 mile ( 7 kilometers ) per pixel . Tethys was 930,000 miles ( 1.5 million km ) away during this observation and has a pixel scale of 6 miles ( 9 kilometre ) per pel .
NASA noted that each feature article in this video are connected : Cassini , named for astronomer Giovanni Cassini , discovered both moon : Rhea on December 23 , 1672 and Tethys on March 21st , 1684 .
[ NASA ]
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