Story highlights A moon, MK2, has been discovered orbiting the dwarf planet Makemake

Makemake lies in the Kuiper belt at the far reaches of our solar system

It is around two-thirds the size of Pluto

(CNN) Orbiting a tiny planet at the far reaches of our solar system is an even tinier, pitch-black moon, NASA's Hubble telescope has revealed.

The moon -- nicknamed MK2 -- orbits Makemake, the second brightest icy dwarf planet, after Pluto, in the Kuiper belt , the huge mass of comets, frozen rocks and other objects orbiting the sun beyond Neptune.

It was discovered by scientists at the Space Telescope Science Institute and the Southwest Research Institute, using the Hubble space telescope.

Makemake, named for the creation deity of the Rapa Nui people of Easter Island, has a diameter of 870 miles, around a 10th of the size of Earth and two-thirds that of Pluto. MK2 is smaller still, with a diameter of just 100 miles.

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