The rings are the star of nearly every picture of Saturn. But take a closer look and there’s amazing mysterious about those pictures. Where are all the real stars around the planet?
The stars are there, you presently can’t see them, and the reason why is the rings themselves. The rings of Saturn are incredibly bright—in fact, they’re brighter than the majority known stars. And that brightness comes at a cost.When astronomers take photo of the planet with Cassini’s Saturn-orbiting camera, including equally the rings and stars in the similar frame saturates the camera with too much light. To get presently the rings, photographers can use a shorter contact time, but that also means that the less-bright stars don’t show up in the frame at all. Even pictures of Saturn’s surrounding moons frequently end up with no stars in the frame because the moons as well add to the overall brightness.
Cassini did manage to snag a image of Saturn’s moon Enceladus in 2008, with stars in the background, but only because the moon was in cover at the time.
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