Uranus has only been visited by a spacecraft once—and Voyager 2 “arrived at just the wrong time,” says Jamie Jasinski, a planetary scientist at NASA’s Jet Propulsion Laboratory. Jasinski is the lead author of a study published in the journal Nature Astronomy that suggests the 1986 flyby happened when solar activity had created very unusual conditions, meaning our understanding of the planet has been wrong for the past 38 years, the New York Times reports. “If we had arrived a week earlier, we would have had a completely different picture of Uranus,” Jasinski says. Jasinski and his co-authors s…