Narrowing down the search is essential for gaining time on a high-powered telescope that could spot the hypothesized planet directly.
With efforts ramping up to send a spacecraft back to the Uranian system, anticipation is increasing as to what geological surprises are hiding inside and on the surfaces of the icy Uranian moons.
In a new model, three substantial atmospheric layers appear consistent between the ice giants.
Planetary rings can act as seismometers that respond to changes deep within a planet.
Scientists tested whether a classic technique could detect subsurface oceans on the moons of Uranus. In this scenario, the planet’s oddball magnetic field offers a big advantage.
Scientists imagined some innovative technologies that could enhance a future mission to Uranus or Neptune.
Voyager 2 visited the ice giants in the 1980s, the only craft ever to do so. Planetary scientists argue that new missions to each planet would also benefit heliophysics and exoplanet research.
New research shows that an electric field surrounding Venus is stripping its atmosphere of water—and the same phenomenon may plague exoplanets scientists hope might be habitable.
A recently observed temperature reversal on Uranus may offer a clue to a long-standing mystery: Why are the upper atmospheres of gas giants so hot?