Get the facts on this planet of extremes. Orbiting the Sun at a distance of 4.5 billion kilometres - more than 30 times further out than the Earth - Neptune is a dark, icy world. Receiving just one ...

Despite being more common than any other planet in our galaxy, the solar system lacks a mini-Neptune. That means, to study these worlds, scientists have to look beyond our planetary backyard with ...

As they explain, planets sized between Earth and Neptune are relatively common in the universe. These planets, absent in the Solar System, are called mini-Neptunes. The Japanese team recently ...