Researchers identify four possible candidates in search for Planet 9

Astronomers are still searching for the hypothetical Planet 9, and now four new objects discovered may be possible candidates. Image Credit: Caltech/R. Hurt (IPAC)

The search for a possible ninth planet in our Solar System has intensified in recent months, with more astronomers as well as amateurs joining in the hunt. Previous studies have hinted at its existence, but actually finding it has remained an elusive task. Now, astronomers from The Australian National University (ANU) are investigating four unknown objects in the outer Solar System that could be viable candidates for the mystery planet.

Read MoreResearchers identify four possible candidates in search for Planet 9