Understanding the origin of these objects can help explain the origins of the entire Solar System
Heroes of Space: Clyde Tombaugh
The amateur astronomer who discovered Pluto and visited the dwarf planet after his death
If we discovered another planet in our Solar System, what would we call it?
A new planet needs a name – but what we would we call it if it was found in our Solar System?
How big is a dwarf planet?
Measuring the size of these pint-sized worlds is more complicated than it seems…