NASA’s Voyager 2 spacecraft flew past Uranus in 1986 and Neptune in 1989. These flybys remain the only close-up observations of either world. Voyager 2 measured each planet’s magnetic field, radiation ...

"In our study, we investigated how the chemical interactions between magma oceans and atmospheres affect the water content of young sub-Neptune exoplanets," says Werlen. To do this, the researchers ...

We’ve got a pretty good idea about what’s beneath the surface of our nearest planetary neighbors, like Mars. But as you get farther out into the solar system, our knowledge becomes scarce. For ...