'Moving at 2.9 miles per second, this planet has the slowest orbital speed of any planet in our solar system'
Pluto
THE SOLAR SYSTEM: Moving at 2.9 miles per second, this planet has the slowest orbital speed of any planet in our solar system
Moving at 2.9 miles per second, this planet has the slowest orbital speed of any planet in our solar system
Moving at 2.9 miles per second, this planet has the slowest orbital speed of any planet in our solar system
THE SOLAR SYSTEM
Pluto
THE SOLAR SYSTEM