Discover interesting facts about the sun, the solar system's central star that supports all life on Earth.

For years, astronomers have been searching for a mysterious ninth planet lurking in the dark outer reaches of our solar ...

Our solar system is estimated to be about 4.57 billion years old. Previous analyses of ancient meteorites have shown that minerals were created through chemical reactions with water as far back as ...

Though Pluto has formally been considered a dwarf planet for almost two decades, it still has many lessons left for planetary scientists — including hints about how the solar system formed.

Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky. A cloud of collapsing gas created our Sun, the first thing to ...