Earth, warm Jupiter, and brown dwarf in highly inclined and eccentric orbits, giving insights into planetary formation.

The workings of our solar system are roughly the same now as they have been for millions of years. Moons circle their planets, the planets circle the sun, the sun’s magnetic fields and sunspots wax ...

Scientists may have discovered a dwarf planet far beyond Neptune — an unearthing that may disprove a longstanding theory about the possibility of a giant ninth planet. The dwarf planet's existence ...

Add Yahoo as a preferred source to see more of our stories on Google. Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky ...

Illustration comparing the planets of the Solar System and the Sun on the same scale. The planets are shown to scale relative to each other but their distances are not. From left to right the bodies ...

Discover the hottest planet in the solar system, why Venus is hotter than Mercury, planet temperature facts, greenhouse ...

Persephone is one of the worlds that only exist in imagination land. It popped up in the heads of the people from French ...

Even at a glance, the planets in our solar system are wildly diverse. Huge and small, airless and densely packed with ...

Far from the Sun’s heat, orbiting the outer planets of the solar system, are moons with oceans of liquid water beneath their frozen surfaces. Keith Cooper finds out how planetary scientists are ...