NewsPlanetary ScienceUranus emits more heat than previously thoughtAll four of the suns giant planets emit more energy than they receive from the sun Like the suns other giant worlds, Uranus (seen in this 1986 photo from the Voyager 2 spacecraft) radiates more energy than the sun gives it, though not nearly as strongly as its massive peers do.JPL/NASABy Ken Croswell1 hour agoUranus emits more energy than it gets from the sun, two new studies report a discovery that contradicts findings from the venerable Voyager spacecraft.When Voyager 2 sped past Uranus on January 24, 1986, the spacecraft detected no significant excess heat from the planet, making it seemingly unique among the suns giant worlds. However, new observations from space- and ground-based telescopes reveal that Uranus does in fact radiate more energy than sunlight provides, two research teams report in work submitted to arXiv.org in late February.