From the surface, Earth looks like a relatively ordinary rocky planet, wrapped in clouds and a thin blue atmosphere. A new line of research argues that, hundreds of millions of years ago, it may have ...

Planetary scientists led by Paolo Sossi have determined that Earth assembled almost entirely from material originating in the inner solar system, with outer solar system contributions limited to just ...

Saturn sports some of the coolest bling of any planet in our solar system. Its nine rings, which are mainly comprised of dust, rock and ice, have been the subject of scientific research for years.