Far from the Sun, Uranus sits tipped on its side, carrying a magnetic system unlike any other planet’s. Its equator tilts about 97.7 degrees relative to its orbit, so the planet spends long stretches ...

When Voyager 2 made the first and only flyby of Uranus in 1986, a stronger electron radiation belt at higher levels was noted. With such off-the-chart readings compared to other planetary systems, ...