Scientists suspect a ninth planet orbiting beyond Neptune and Pluto in our solar system.
It may be between five and 20 Earth masses and present on an elliptical at some hundreds or thousands of times more distant from the Sun than the Earth.
The Subaru Telescope in Hawaii, Earth’s most massive potent observatory can view a field in the sky about the size of 4,000 full moons at once.
Researchers say, if the orbit of the ninth planet is beyond the 1,000 AU limit of current telescopes, it could lie invisible for the next 1,000 years.
They are now focusing on the thought that something beyond Neptune is present that is causing the orbits of other space objects to be affected. But planet Nine remains to be confirmed.