Hubble finds out fourth moon of Pluto

 The Hubble Space Telescope exposed a fourth moon orbiting the planet Pluto, as NASA said.

The Hubble was looking rings around the planet, located in the outer edge of our solar system, when he came across P4, the temporary name has received newfound moon.

With an estimated diameter between 13 and 34 miles, P4 is the smallest of the four moons of Pluto, said the U.S. space agency.