When astronomers found a large world farther out than Pluto, it became one of the final nails in the coffin of our ninth ...

In this video, I set out on an extraordinary mission to discover a new planet. With the odds stacked against me, I rented a ...

In 2005, Eris was discovered. It was considered the largest known dwarf planet in the solar system until a year later when Pluto was downgraded from being a planet. In 2008, tribal violence ...