WASHINGTON, Dec. 14 (UPI) — On Monday, NASA shared an image of two of Saturn’s moons doing their best impression of a dartboard.
Saturn’s two brightest moons, Enceladus and Tethys, were caught in near-perfect alignment by Cassini’s camera — with the smaller of two, Enceladus, playing the role of the bull’s eye.
Because the two moons are similar distances from Cassini, the neat alignment offers a realistic portrayal of their relative size difference. Enceladus measures 313 miles across, while Tethys is 660 miles wide.
When the picture was taken by Cassini’s narrow-angle camera on September 24, 2015, the probe was 1.3 million miles away from Enceladus and 1.6 million miles from Tethys.
Cassini has been orbiting Saturn and its moons since 2005.
Saturn is believed to have at least 150 natural satellites, but only 53 of the moons have been formally named.
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