LTT 9779 b, an ultra-hot Neptune, is defying expectations. With temperatures soaring to nearly 2,000°C and a tidally locked ...

The scientists who made this discovery suggest two possible scenarios: GJ 9827 d may be a "mini-Neptune" with a water-imbued, hydrogen-rich atmosphere or a warmer version of Europa, Jupiter's moon ...

On Neptune far out in the solar system it’s a different story—but what happens on the ice giant planet nevertheless appears to be inextricably linked to the same solar cycle. Having looked at ...

But Uranus and Neptune don't. Instead ... composed of compressed water, methane, and ammonia, below which is the planet's rocky core. Within the mantle, Militzer says, he discovered that the ...

For instance, what’s inside the so-called ice giants, Neptune and Uranus? Recent research based on computer simulations of fluids hints that the planets could contain vast multi-layered oceans, as ...