It happened back in 1986—but it could happen again.
of the NASA Goddard Space Flight Center are two such researchers. Motivated by the community’s growing interest in the outermost planets, they spent hours manually processing the thirty-year-old data in a new way. Voyager scientists calculated the strength of the magnetic field as a whole, DiBraccio says, so short variations in the magnometer reading were simply considered a nuisance.
Now that they’ve caught one red handed, she says it looks quite similar to those seen leaking from Saturn or Jupiter but stealing away relatively more mass. . More such discoveries could remain in the archives, awaiting novel analyses. “Most of the Voyager 2 data are available on NASA’s Planetary Data System,” DiBraccio says, “and there is likely much to still be learned.”
Uranus in particular keeps on begging for further investigation. In 2014 Erich Karkoschka, an astronomer at the University of Arizona, revisited Voyager 2’s images with modern processing techniques. By blending 1600 images and sharpening the contrast, Karkoschka’s work revealed that ahad been hiding within the bland blue ball all along.
On top of its unappreciated complexity, it’s also the odd planet out. Where others spin, Uranus rolls, tipped on its side with its poles pointing generally toward or away from the sun. Itstoo, offset from the planet’s center and tipped at a wild 60 degrees to the side.
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