Nearly a century after Pluto’s discovery, astronomers are still hunting for mysterious planets beyond Neptune - including a ...

How Many Planets Are There in the Solar System? There are 8 planets in our solar system. The planets orbit the Sun in elliptical trajectories, and they are all different in size, composition, ...

If three’s a crowd, then six makes a chorus. That’s the case at least for a rare six-planet solar system whose discovery has wowed astronomers, even in an era when detecting planets around distant ...

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 form in ...

NASA scientists have referred to Jupiter as “the biggest and baddest planet in the solar system” — with good reason. It is the largest, most massive body aside from the sun, and its influences are ...

A distant gas giant the size of 10 Jupiters is now the first planet outside Earth's solar system to be mapped in three ...

The first map of magnetic fields in a planetary formation disk has been created, revealing how invisible forces shape the ...

A study by astrophysicists at the University of Toronto suggests that exoplanets – planets outside our solar system – are more likely to have liquid water and be more habitable than we thought.