For decades, astronomers have observed ephemeral strata moving back and forth over Saturn’s rings.
Now, for the first time in over a decade, these eerie speck-like shapes are back. This is a unique event in a rare part of our solar system, as there are few known ring-shaped bodies in our cosmic neighborhood.
“This is fascinating natural magic found only on Saturn, at least for now,” said NASA planetary scientist Amy Simon in a statement.(opens in new tab).
Scientists Detect Something Really Unexpected Under Saturn’s ‘Death Star’ Moon
Saturn surrounded by rings. On the left is the mysterious “spoke” of the ring.
Credit: NASA / Hubble
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The spokes disappear on either the gas giant’s winter or summer solstice. As on Earth, this means when sunlight reaches the furthest or lowest extent. (The summer solstice, for example, is for this reason he’s the longest day of the year.) But as the equinox—the time in autumn or spring when the days and nights are about the same length—approach the blotches return.saturn season for the past seven years, Because the planet is far away from the Sun. Therefore, it takes a considerable amount of time for Saturn’s seasons to change.
But even in-depth studies of Saturn’s rings by NASA’s legendary Cassini spacecraft, planetary scientists don’t fully understand exactly when the pattern will return.
“Despite years of excellent observations by the Cassini mission,” said NASA’s Simon, “just as we predict the first storms during a hurricane season, we still can’t predict the exact beginning and duration of the spoke season.” you can’t.
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What causes this planetary mystery?
Planetary scientists suspect that charged particles traveling from the Sun, called the solar wind, collide with Saturn’s magnetic field, “creating a charged environment.” On Earth, this creates the brilliant Aurora Borealis. At Saturn, hundreds of millions of miles away, tiny dust-sized particles in its rings could be electrically charged. This allowed “levitation of these particles on top of the remaining large ice particles and boulders within the rings,” ultimately allowing us to see changes in the appearance of Saturn’s rings, the space agency explains. .
Saturn’s equinox is still over two years away, so expect to see more interesting patterns of change in this distant world ring. Indeed, our solar system is strange.
