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

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

Pluto hasn't been a planet for almost 20 years. In the early 2000s, scientists discovered several objects of a similar size to Pluto. So, during the summer of 2006, members of the International ...

All of our solar system’s planets are lining up in the night sky at once this week. This extraordinary celestial event will see the sky scattered with seven visible planets in what is known as a great ...