Pluto was discovered in 1930 in Arizona, but in 2006 scientists decided to cut Pluto from the planetary line up. Here is why ...

Astronomers have discovered that "super-Earth" planets may exist on wider orbits than previously thought — and this implies ...

Earth" planet was discovered by researchers. It is not believed these planets are more common than previously thought.

And some experts believe planets should be defined by their ... How long is 1 day in Pluto on Earth? A single day on Pluto, that is, the time it takes for Pluto to complete one full rotation ...